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I should not have deemed it worth recording. | prolific areas produce the largest forms as well ?--
Having requested my friend to write down the facts, Ernest G. Harmer.
I send them in his own words. “Remembering
your request, I will now fulfil my promise to send you

YUCCA.-Is it usual for the yucca to blossom outall the particulars I could obtain respecting the

of-doors in midwinter? At the present time three cuckoo that spent a winter in England. The bird

plants of one of the yucca species have each a fine was reared when young by hand from the nest, and

spike. The heights are respectively, thirteen inches, became quite domesticated, flying in and out of the

fifteen inches, and eighteen inches, clear of the stalk house occupied by a farm labourer, whose father was

supporting them. They have not developed into a an invalid, who never left his room, and who pre

panicle, nor, I should think, are they likely to do so. vented the bird being disturbed after taking up its

We have now (December 31st) had frost for a week, place on a clothes reg over his bed, in which

and yet the spikes are only slightly touched by it. position the bird remained the whole of the winter,

These plants are to be seen on the south-east terrace

of a house : the house coming between them and the without moving or taking any food, apparently in quite a dormant state. In the month of April it flew

sea. Birkdale is a suburb of Southport, about sevenaway uttering the usual 'cuckoo, cuckoo,' and was

teen miles from Liverpool, and on the shore of the seen no more. The bird on the perch was a familiar

Irish Sea.-H. M., Birkdale. object to all who entered the cottage during that

THE ANATOMY OF THE COCKROACH.—The winter and continued to excite astonishment. This

authors of the most interesting and instructive papers occurred some years since in the village of

upon the anatomy of the cockroach recently published Humphrey's End, near Stroud, Gloucestershire.”

in SCIENCE-GOSSIP would confer an additional favour Surely some witnesses can still be found of such an

upon your readers if they would describe the methods extraordinary event amongst the residents of

adopted by them in preparing the specimens from Humphrey's End, and your readers, like myself,

which their drawings were made.-7. H. Moorhead. would like to know what they have to say about this hybernating cuckoo.-W. P., Shrewsbury.

LION AND Tiger. I should be glad if some A White SPARROW.-On the 2nd of October

zoologist would explain what appears to me a

difficulty in natural history, and that is, placing the last, I got from one of the porters at the railway

lion and tiger in the same genus (Felis), as they are station here a beautiful specimen of what may be

so very dissimilar in many respects. The lion has a termed a “white sparrow." It had been frequenting the station for some time back, and had been traced

tuft on his tail. Mr. Dallas, in his Natural History,

writes, “ In the typical genus (Felis) the tail is much to its roosting-place in the goods shed, where it was

elongated, but destitute of a tuft, and the skin is caught at night by means of a lantern. Its head and neck is pure white, its breast and belly of a dull

almost always marked with stripes or spots.” The tiger white, the forepaws of the wings pure white, the

has retractile claws ; lions have not. The cat family flight feathers of the usual colour, centre feathers of

climbs trees-lions do not. The cats live in the woods, the tail white, its beak and legs of a very light

lions roam on the plains; besides, there are other

differences between the two animals which will colour with a faint tinge of yellow. I have kept it in a cage since I got it, and it is now getting very tame.

occur to your readers. I have talked this matter

over with a sportsman, who was well acquainted --A. F., Anstruther, N.B.

with them in their native haunts, and shot many ; he GOLDEN EAGLES' EGGS.-The relation of a friend agrees with me that they should have a separate class. of mine has in captivity a female golden eagle that -S. A. Brenan, Cushendun. has this past season laid two eggs of which I am now the fortunate possessor. They are of the usual dull

RECENT SUGGESTIONS.—Two capital observations white colour, and one of them only has the reddish

or suggestions have recently appeared in SCIENCEbrown markings on it which are rather saint ; the

Gossip. One of these refers to the tide of bricks, other is almost a uniform dull white, with scarcely a

mortar and plaster which is surging all around mark on it. Would the fact of the eagle being kept

London, and which in its course threatens to so in captivity have anything to do with the marks on

materialise the suburbs that scarcely any vestige of the eggs? And is it not remarkable that an eagle

natural beauty or power will survive. Green fields, kept in captivity should lay at all? Perhaps some

trees, wild flowers, &c., will rapidly disappear, and of the numerous readers of SCIENCE-Gossip would

the wearied artisan, the rambler, the naturalist, will kindly give me this information.-A. F., Anstruther,

alike be deprived of their rural haunts of pleasure and N.B.

instruction. Epping Forest has been preserved,

thanks to the energy of some naturalist, or sportsTWIN FLOWERS ON SAME STALK.--I have ob man, I forget which; and now Highgate Wood served the same peculiarity as R. H. Wellington with its flowers and birds, Hornsey with its pleasant mentions in your issue of January, not only on dahlia landscapes and walks, Muswell Hill rich in the stems, but on hellebore with purple flowers.-S. A. B., romance of geology, &c., are threatened with the Cushendun,

inevitable. Even the very presence of houses in any

considerable number seems deleterious to vegetation. LARGE UNIOS AND ANODONS.- My December During last summer I spent many weeks in Patternote seems to have been a little misunderstood. I dale, perhaps the most retired and beautiful valley did not cite my 64 in. A. cyaneus as in any way in all England, and I can amply testify to the lavish extreme, specimens quite equalling the largest men and beautiful efflorescence there to be seen. The wild tioned on p. 22 (9 in.) having been found profusely, | roses, the campions, the fox-glove, the stitch-worts, the I am told, in Victoria Park, London, a few years back. cranesbills, the wound-worts, the garlics, the burnets, The record of U. pictorum up to 51. in. is most interest. &c., were exquisite in colour and of a larger size than ing as being by no means general. A critical synopsis those commonly known to townsfolk. The other of authenticated maximal lengths would form a valu suggestion, which I alluded to, refers to the establishable addition to future works on this subject, especially ment in a suitable part of London of a popular obserif accompanied by short notes of habitat, as bearing vatory. I understand that about ten years ago there on the elaboration of shell-matter. Do the most did exist some sort of peep-show observatory some

process with rats. For experiment I have given the carcass of a white rat, to a black and white variety, and observed the same result-only a few bones of the head remaining attached to the skin.-F. W. Halfpenny.

NOTICES TO CORRESPONDENTS.

To CORRESPONDENTS AND EXCHANGERS.-As we now publish SCIENCE-GOSSIP earlier than heretofore, we cannot possibly insert in the following number any communications which reach us later than the 8th of the previous month.

To ANONYMOUS QUERISTS.-We receive so many queries which do not bear the writers' names that we are forced to adhere to our rule of not noticing them.

To DEALERS AND OTHERS.-We are always glad to treat dealers in natural history objects on the same fair and general ground as amateurs, in so far as the "exchanges" offered are fair exchanges. But it is evident that, when their offers are simply disguised advertisements, for the purpose of evading the cost of advertising, an advantage is taken of our gratuitous insertion of exchanges " which cannot be tolerated.

We request that all exchanges may be signed with name (or initials) and full address at the end.

2.

where in or near the Euston Road. How it managed to go “down the hill,” is more than I can say ; but that it was not a very remunerative concern seems evinced by the fact that, to my knowledge at least, nothing of the sort has ever been established since. We all remember what a fine show there was at the Education Department of the Healtheries Exhibition. In a mechanical point it seemed almost perfect ; but nevertheless it is true that the scientific culture of the English public mind has proceeded much slower than that of most foreign nations. We read that during the eclipse of October last, the French Government provided in the streets of Paris a number of telescopes for the gratuitous use of the public. When will the British Government be so far actuated by British public opinion or feeling, or whatever it be, as to act in a similar manner ?-P. Quin Keegan, LL.D.

SEWAGE SCHEMES.-In SCIENCE - Gossip for September there is an article on sewage which reminds me of a plan which is adopted with great success in Copenhagen. It is merely this, that there is a division by which the liquid is run off from the house into the drains. There is nothing in the smell from the residue ; in fact, I could not perceive any in a large hotel in Copenhagen. The ammonia from the liquid is by no means injurious to health ; of this we have had ample experience in Smithfield. Of earth closets—to make a slop as is done in earth closets, and then to put in earth to dry it up, seems a roundabout way to get rid of a nuisance. I have very little doubt, that in crowded places especially) the Copenhagen plan will have to be adopted. Gas water contains considerably more ammonia than the liquid which is absorbed in the earth closets, and as this gas water is sold for less than a penny a gallon for heating sulphate of ammonia, such liquid as runs into the drains at Copenhagen is probably not worth attending to except in particular situations.7. G., Malvern.

A MUSICAL MOUSE.-One evening in the summer of 1883, I noticed a mouse making a peculiar noise in the sitting-room of my house. The noise resembled that made by a kettle just beginning to boil, or a sort of low whistle, and was very clear and distinct. This singing (?) power appeared to be under the control of the mouse, for as the little creature moved about in search of stray crumbs over the carpet, it ceased occasionally, and also when alarmed, as the animal hurried off. I observed the little visitor hundreds of times afterwards, and it always made the same (by no means unpleasant) noise, when out in the room foraging. After some months, however, it mysteriously disappeared without apparent reason. A friend of mine informs me that this “musical " power, though uncommon has been observed before, and is the result of some disease to which the animal must have succumbed. I have also been informed by others, that it is a natural peculiarity. Would any contributor to this Journal kindly give a true solution to the mystery, or particulars of similar cases that may have been observed ?-S. H. Veale.

VICAR.- The “Popular Science Review” is not now in existence. It has been defunct about five years.

Miss L.We do not insert exchanges gratuitously in which the word "cash " occurs. Those are “sales," not“ exchanges," and have to be paid for as advertisements.

J. ELLISON.-Your shells are: 1. Anodonta anatina: Unio pictorum ; 3. Unio, sp. (?) (American); 4. U. tumid 5. Paludina vivipara; 6. Limnea auricularia

G. SMITH AND OTHERS.-We will let our readers know concerning the proposed General Index in time. The last was published in 1876, price 8d. It included the contents of the first 12 volumes, and may be had of our publisher.

B.Sc.-Thanks for the interest you take in our journal, but we think it would be a mistake to leave out the botanical names in the description of plants, &c., and give only the trivial names. It would open the door to considerable inaccuracy and misunderstanding.

C. G. D. (Guernsey).-Your Coralline is a very fine specimen of the Polyzoon, Eschara foliacea, not uncommon in the deeper parts of the sea off our southern coasts.

6. T. -The last edition of Carpenter's “Microscope” was published in 1883. It is a fine work, and will fully serve your purpose, and answer every question relating to practical microscopic work.

1. E. C.. jun.-The last number of the Proceedings of the Geologists' Association was published in October, and may be had of E. Stanford, Charing Cross, price is. 60.

J.M.B. TAYLOR.-Many thanks. All your notes will appear in due course.

W. J.-J.-Rimmer's “Manual of Land and Fresh-water Shells is the best. Nearly all the species are there photographed, price ros. 6d. There is no regular work on the fossils of the chalk, but you will find a good deal about them in the various works of Dr. Mantell, (“Medals of Creation," 2 vols.; “Geology of the Isle of Wight,” &c.), or in “Our Common British Fossils, and where to find them,” by J. E. Taylor, which will be published in March next.

ALCHEMIST.-Meldola's “ Elementary Text Books on Chemistry.” are among the best used in connection with the South Kensington Examination. They are cheap, and published by Murby & Co. Apply to Messrs. Churchill, publishers, for information respecting an elementary text-book on Medicine.

R. CONNOR. -No sketches of objects were enclosed in your letter. If you will send them we will do our best to identify them.

A. Shaw.-We do not undertake to name foreign objects of Natural History. The shells shall be looked up and forwarded to you.

Ś. A. BRENAN.--The "fungoid growth” was a species of Nostoc--the so-called “Witch's Butter." Specimens sent to be named are not returned. The one you forwarded us was in a state of high decay when it reached us.

BLACK RAT.-The black rat is still to be met with at most of the London docks, and, although it does not now occur so frequently as in years past, it can hardly be considered rare. The war of extermination carried on by the Norway or sewer rat against the black rat, means, that not only does it kill its victim but devours it too. A friend of mine employed at one of the docks, has occasionally found skins of freshly killed black rats, turned inside out, in various drawers, boxes, &c.; this seems to be the usual

EXCHANGES. WALLROTH's (Latin) “Compendium Flora Germanicze" (1831), vol. iii., containing the rhizopterides, equisetum, ferns, lycopods, hepaticæ, mosses, and lichens, 654 pp., in strong pocket-book binding, to be exchanged for books or specimens illustrating the fungi.-W. B. Grove, 269 St. Vincent Strect, Birmingham.

WANTED, SCIENCE-Gossip for February and March, 1884.-G. A. Grierson, 74 Market Place, Sheffield.

WANTED, to exchange with some one living in North Britain, mósses and hepaticæ from Glocestershire. - E. J. Elliott, Middle Street, Stroud, Gloucestershire.

CEYLON insects, mainly lepidoptera, to exchange for other exotic lepidoptera or entomological micro. slides :- Surgeon Clements, Ariny Medical Staff, care of P.M.O., Ceylon.

OFFERED, a geologic I collection of from eighty to a hundred well-selected and named specimens for good chemical balance ; or what offers in books either on geology, botany, chemistry, or animal physiology ?-J. T. Back and, 93 High Street, Paisley, N.B.

What offers in dried plants for Ophioglossum Lusitanicum? -Apply, Free Museum, Paisley, N.B.

WANTED, bats, any others than the common, long-eared, or Daubenton's bats, either skins or in flesh, for palmated smooth newt (Lissotron palmipes), in spirit.-J. T. Backland, 93 High Street, Paisley, N.B. - UNMOUNT EU spores of Equisetum arvense (very curious) for well-mounted slide or prepared material.-W. Sim, Gourdas, Fyvie, N.8.

DUPLICATES: L. stagnalis and P. corneus (very fine), L. peregra, P. complanatus, P. spirorbis, D. polymorpha, H. pi. sana, H. lupicida, var. alba of H. virgata, H. caperata, arbustorum, H. ericctorum, H. rufescens, C. rugosa, &c. Desiderata very numerous, land, freshwater, and marine shells; also algæ.-W. Hewett, 26 Clarence Street, York.

Humatopinus atini and other well-mounted slides in exchange for lantern photos or micro slides.--Dr. Moorhead, Errigle, Cootehill, Ireland.

EIGHTEEN packets of unmounted microscopic material sent in exchange for one well mounted slide and stamp.--M. B., o Kirkdale, Sydenham, S.E.

A LARGE quantity of British and foreign shells, minerals, &c.,

exchange for a small white wood microscopical cabinet, glass door required, to hold 144 slides.-M. B., 9 Kirkdale, Sydenham, S.E.

WANTED, English, silver, and copper coins, tokens, and medals ; good exchange offered in fossils and other objects of natural history.-F. Stanley, Margate.

WANTED, well-mounted slides of eggs of insects, moth eggs preferred ; first-class slides in exchange.-George Timmins, Syracuse, N.Y., U.S.A.

WANTED, October, 1868, number of “Anthropological Review," a fair price, or a copy of "A Few Words on Zoology," together with "A Short Account of Giraffe," by J. H. Garrit, given in exchange; also Vogt, "Lectures on Man," English translation, if not very expensive.- John H. Garfit, The Cairns, Boston, Lincolnshire.

DUPLICATES: Rhamni, Cardui, Atalanta, Tages, Selene, Tithonus, Adonis, Corydon, s. populi, Oculea, Ulmata, Chi, Bipunctaria, Festucæ, Glyphica, Illumaria, Betularia, Comitata, Bucephala, Perla, Cæruleocephala, Menthastri, Auriflua. Desiderata: British birds' eggs, side blown, or butterflies and moths.-F. J. Rasell, 30 Argyle Street, S. James End, Northampton.

DUPLICATES: Io, Atalanta, Corydon, Cardamines, Linea, S. populi, Ligustri, 2. Trifolii, Potatoria, Bucephala, Betularia, Atomaria, Piniaria, Rhomboidaria, Perla, Instabilis, Cubicularis, Haworthii, Libatrix, Meticulosa, Oxycanthæ, Spadicea, Lota, Hybridalis, Cerella. Desiderata numerous. Accepted offers answered by return of post.-George Balding, Ruby Street, Wisbech.

BRITISH birds' eggs.-Duplicates : coot, moorhen, red-legged partridge, &c. Desiderata very numerous.-George Balding, Ruby Street, Wisbech.

WANTED, odd back numbers of scientific periodicals: SCIENCEGossip, “Nature,” “Zoologist," “ Journal of Conchology," &c. Will give in return a good series of British Shells.-S. C. Cockerell, 51 Woodstock Road, Bedford Park, Chiswick, W.

SHELLS for exchange: L. glutinosa, A. acicula, 2. excavatus, Bulla hydatis, Lit. neritvides, Physa acuta (from Kew Gardens), and many others. Wanted, Acme, Vertigo, and varieties of nemoralis, hortensis, &c.-S. C. Cockerell, 51 Woodstock Road, Bedford Park, Chiswick, W.

Micro slides offered in exchange for scientific books and instruments.-Samuel M. Malcolmson, M.D., 55 Great Victoria Street, Belfast.

FOSSILS.-Over 400 specimens. miocene, eocene, chalk, lias, oolite, from Red Crag, Bognor, Barton Cliff, Shepton Mallet, Lyme Regis, and Portland; also a few mineral and rock specimens from Cornwall, in exchange for two pairs of canaries for breeding purposes, or Morriss's “ British Birds."-T. Lawson, 9 Marshall Street, Golden Square, W.

OFFERS wanted in exchange for 240 birds' eggs, many varieties, both land and water birds.-Alfred Draper, Abbey Dale Road, Sheffield.

WANTED, microscopist's collecting case, net, &c.-A. Draper, 275 Abbey Dale Road, Sheffield.

WANTED, members for Botanical Evercirculator. Full particulars on application to--T. F. Uttley, 17 Brazennose Street, Albert Square, Manchester

WANTED, back numbers of SCIENCE-Gossip, from commence. ment to present date, to complete volumes. Send list of spare numbers for exchange to-T. F. Uttley, 17 Brazennose Street, Albert Square, Manchester.

SCIENCE-Gossip, clean, 1882, 1883, 1884, plates of “Graphic Microscopy.” What offers ? -John Kitchin, Grosvenor Place, Upper Parliament Street, Nottingham.

SCIENCE-Gossip, 1880' (unbound and in good preservation), for good scientific (natural history) book of same value.-Arthur Ayling, Tarrant Street, Arundel, Sussex.

OFFERED, "Scientific Recreations" (unbound and in excellent condition), for vols. ii. or iii. of “Science for All," or other good scientific books or periodicals.-Arthur Ayling, Tarraat Street, Arundel, Sussex.

WANTED, Continental plants in exchange for other Continental or English plants.-A. R. Waller, Low Ousegate, York.

1500 British moths (many rare), including 400 species, for exchange for a similar collection of British Coleoptera ; also foreign butterflies for foreign Carabidæ and Longicornia.Delancey Dods, 47 Chepstow Place, Bayswater.

Most of the Longicornes and many of the Chrysomela and Geodephaga for exchange. Desiderata : marine shells, British and foreign. Lists sent.-G. Pullen, Free Library and Museum, Derby

Wanted, fossils from Upper Miocene, Middle Eocene of France, Upper Miocene of Belgium and Germany, Solenhofen stone; also foreign land, marine, and freshwater shells. Offered, fossils and shells.-Miss Linter, Arragon Close, Twickenham.

POLARISCOPIC.-In exchange for any good micro photograph, I will forward a very beautiful slide of copper sulphate, showing circles on variegated ground.-Mathie, 42 Mckinlay Street, Glasgow.

OFFERED, SCIENCE-Gossip for 1883, in clean separate copies; also with covers off for binding 1874 and 1875. Wanted, books on British Flora.-A. V., Mount Cottage, Red Hill, Surrey.

OFFERED, Black's “Three Feathers," 6s. edition, one vol., post free, for last number of “Popular Science Review,” edited by Dallas, post free. Wanted, terms for this quarterly, secondhand, post free.- Vicar, Salcombe Regis, Sidmouth.

WANTED, to purchase a few specimens of flint implements (British).-F. Chams, 10 Broomfield Road, Chelmsford.

REPTILES in spirits, young crocodile, whip snake, viper, sea snakes, scorpion, centipede, &c., in exchange for flint and stone implements, or British birds' skins.-R. McAldowie, 12 St. Nicholas Street, Aberdeen.

Good specimens of British butterflies wanted in exchange for local British plants.-F. and C. Towndrow, 2 Commercial Buildings, Malvern Link,

WILL exchange a good selection of several hundred dried specimens of British plants, for restoration or Elizabethan dramas or poetry. Offers requested, silence negative.-W. Roberts, jun., Heamoor, Penzance, Cornwall.

OFFERED, Illustrated Science Monthly," first two volumes, cost ios. ; wanted, botanical or other slides, lepidoptera, pupe, &c.-S. M. Wellwood, 320 Duke Street, Glasgow.

Pinnules of Neuropteris gigantea, from the coal measures of South Staffordshire, given in exchange for other fossils.-A. M., Martin's Hill House, Dudley.

WANTED, good material for mounting, more especially insects (in spirit); also a quantity of any one insect (providing it is not common); well-mounted slides given in exchange.-C. Collins, 25 St. Mary's Road, Harlesden, N.W.

MICROSCOPIC slides, by Watson & Son, to exchange for others of similar value.-A. P. Williamson, Chapel Alberton, Leeds.

“LONGMAN'S Magazine,” vols. 1-4; “English Illustrated Magazine," vol. i. (both unbound); Cassell's “Illustrated Readings," (2 vols. bound in one); offered in exchange for fossils, corals, shells, &c.-H. L. E., 34 Ling Street, Liverpool.

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The XIX. Army Medical Report on Water Filtration. « ANIMAL CHARCOAL.-When water which has been filtered through charcoal is stored for any time it soon begins to show evidence of low forms of life, and after a time a more or less abundant sediment of organisms becomes formed ... Occasionally it becomes distinctly offensive."

INORGANIC SUBSTANCES.-of these the most important at present before the public is the SPONGY IRON. This is a very powerful filtering substance. .... The action of Spongy Iron is slow but complete; about twenty-two minutes is the time of exposure, and this is usually sufficient to purify all but very impure waters. The water filtered shows no tendency to favour the growth of low forms of life, and may be stored with impunity.

Price Lists, Reports, Testimonials, etc., free.

SPONGY IRON DOMESTIC FILTER COMPANY, 22, New Oxford St., London, W.C.

Materials for Staining, Hardening, Injecting, and Mounting Microscopic Objects.

MOUNTED AND UNMOUNTED OBJECTS OF ALL KINDS.

LIVE OBJECTS FOR THE MICROSCOPE.

Parasite of Tortoise Lists on application to THE LABORATORY,

Post-free is. 3d. Ant Lion, Post-free 2s.

CLAIRVILLE,

ARCHWAY ROAD, UPPER HOLLOWAY, N. . JUST PUBLISHED. Third Edition. Enlarged and greatly improved.

HOW TO USE OUR EYES,

AND

How to Preserve them from Infancy to Old Age, with Special Information about Spectacles.
By JOHN BROWNING, F.R.A.S.
With FIFTY-TWO ILLUSTRATIONS, price 1s. ; in cloth, 1s. 6d....

EXTRACTS FROM NOTICES OF THE FIRST EDITION.
"How to use our Eyes,' by John Browning, F.R.A.S., is a thoroughly practical little manual.”-Graphic,

Every one who cares about his eyesight should get this little book; those who think their eyesight of no particular moment can very readily dispense with it."-R. A. PROCTOR, B.A., in Knowledge.

"Gives many a useful hint to those who enjoy good eyesight and wish to preserve it, and gives the advice of an oculist to those obliged to wear spectacles and whose eyes are in any way affected.”—Pall Mall Gazette,

"We have been especially pleased with the many useful hints given by Mr. Browning regarding sight preservation,”-Health. CHATTO & WINDUS, Piccadilly,!London, W., and of all Booksellers; and at Messrs. W. H. Smith & Son's

Bookstalls. Sent free for 1s. 2d. or 1s. 8d., by the Author,
JOHN BROWNING, 63, ST RAND.

me

de stand sizes the advice

STUDIES IN MICROSCOPICAL SCIENCE,

Edited by ARTHUR C. COLE, F.R.M.S., &c. VOL. III. will be commenced shortly. All correspondence connected with this Volume to be addressed to

J. G. HAMMOND & Co., 136 Edmund Street, Birmingliam, from whom Prospectus can be obtained. Now ready, VOL. I., containing 53 Chromo-Lithographed Plates, £l IIs. 6d.; or, accompanied by 52 Prepara

tions, in Cabinet, £4 145. 6d. And VOL. II., containing THE METHODS OF MICROSCOPICAL RESEARCH; SECTION I., ANIMAL HISTOLOGY;

SECTION II., BOTANICAL HISTOLOGY; and POPULAR MICROSCOPICAL STUDIES; with 38 CHROMO

LITHOGRAPHED PLATES, &I IIs. 6d. ; or, accompanied by 36 Preparations, in Cabinet, 64 45. od. NOTE.—The Sections of either Volume may be had separately.

All correspondence having reference to Vols. I. and II. to be addressed to the EditorST. DOMINGO HOUSE, 53, Oxford Gardens, Notting Hill, W.

From whom all Particulars may be obtained. *** A. C, COLE AND SON'S Pathological, Physiological, Botanical, and general

Preparations and Diatoms, may be obtained of all the principal Opticians.

COLLINS' HISTOLOGICAL MICROSCOPE, at £5 ros., £7 ios., £10, £12.

MICROSCOPES. APPARATUS. MOUNTING MATERIAL.

, ILLUSTRATED CATALOGUE free by post to any part of the world on application. CHARLES COLLINS, OPTICIAN,

157, GREAT PORTLAND STREET, LONDON, W. POLARISCOPES, NOSE PIECES, LAMPS, ACHROMATIC CONDENSERS.

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ENTOMOLOGY, HISTOLOGY, INFUSORIA, MICROSCOPY, NATURAL HISTORY, GEOLOGY, &c., &c., &c. Back parts of the various Microscopical Journals, always in Stock. Catalogues on application. Scientific Books bought or exchanged.

Agent for the American Monthly Microscopical Journal, bs. per annum; and Publisher of the Journal of Microscopy, 6s. 60. per annum, postage induded.

157, GREAT PORTLAND STREET, OXFORD STREET, LONDON, W.

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BRISTOL HOUSE, HARLESDEN, N.W. (within Five minutes' walk of Willesden Junction). PREPARER OF MICROSCOPICAL SPECIALITIES, MOUNTED WITH OR WITHOUT PRESSURE. For full details of Series Nos. 1, 1A, and 2, see the December Number of Science-Gossip, page cxxx. New Series now in preparation.

FULL DETAILED PROSPECTUS, WITH OPINIONS OF SCIENTIFIC PRESS, FREE ON APPLICATION. M. From CHARLES COLLINS's intimate acquaintance with all branches of the Microscopical Trade, he respectfully solicits Microscopists to furoish him with particulars of their requirements in Microscopical Apparatus (new or secondhand), having facilities for procuring and supplying them on most advantageous terms. Al Orders for Mounting Materials, Cements, Glass Slips, Thin Glass Circles, Cells (Tin or Glass), etc., e.recuted with prmftness.

N.B.-Please Note Change of Address.

Crown 8vo., cloth extra, with Illustrations, 6s. LEISURE-TIME STUDIES, CHIEFLY BIOLOGICAL.

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LONDON: CHATTO & WINDUS, PICCADILLY, W.

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WANDERINGS IN PATAGONIA ; or, THE LIFE AND ADVENTURES OF

Life among the Ostrich Hunters. By JULIUS A CHEAP JACK. By One of the Fraternity. BEERBOHM. Illustrated.

Edited by CHARLES HINDLEY. CAMP NOTES; Stories of Sport and

THE WORLD BEHIND the SCENES. Adventure in Asia, Africa, and America. By

By PERCY FITZGERALD. FREDERICK BOYLE. SAVAGE LIFE. By FREDERICK BOYLE. TAVERN ANECDOTES and SAYINGS:

Including the Origin of Signs, and Reminiscences MERRIE ENGLAND in the OLDEN

connected with Taverns, Coffee Houses, Clubs, &c. TIME. By GEORGE DANIEL. With Illustrations By CHARLES HINDLEY. With Illustrations.

by ROBERT CRUIKSHANK. CIRCUS LIFE AND CIRCUS CELE THE GENIAL SHOWMAN; Life and BRITIES. By THOMAS FROST.

Adventures of Artemus Ward. By E. P. HINGSTON.

With a Frontispiece.
THE LIVES OF THE CONJURORS.
By THOMAS FROST.

THE STORY of the LONDON PARKS. THE OLD SHOWMEN and the OLD

By JACOB LARWOOD. With Illustrations. LONDON FAIRS. By THOMAS Frost.

LONDON CHARACTERS. By HENRY LOW-LIFE DEEPS. An Account of the MAYHEW. Illustrated.

Strange Fish to be found there. By JAMES
GREENWOOD.

SEVEN GENERATIONS OF EXECU

TIONERS: Memoirs of the Sanson Family (1688 THE WILDS OF LONDON. By JAMES

to 1847). Edited by HENRY SANSON. GREENWOOD. TUNIS: The Land and the People. By | SUMMER CRUISING in the SOUTH

the Chevalier DE HESSE-WARTEGG. With 22 | SEAS. By CHARLES WARREN STODDARD. IllusIllustrations.

trated by WALLIS MACKAY.

LONDON: CHATTO AND WINDUS, PICCADILLY, W.

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