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to appear under a sort of membrane. This is a pupa workmen ; here I gathered many large specimens of state. A final moulting sets free the wings also, and Unio pictorum, several exceeding five inches in the insect is now perfect.-Dunley Owen, B.Sc. length, the largest measuring 51 inches. I also

obtained many examples of Anodon cygneus, the PHOSPHORESCENT INSECTS.--I venture to send an largest having a length of 6 inches. In respect to additional circumstance which seems to explain the Mr. E. G. Harmer's note, I must remark that I never phenomenon described in November SCIENCE-Gossip. saw an Anodon cygneus which I should consider “a I saw the other evening, on my gravel-walk, a bright very similar looking shell ” to Unio pictorum, nor, light, which I found to proceed from a centipede,

in fact, one that even bore a remote resemblance to which was being violently attacked by a beetle,

any of the anodons. If Mr. Harmer has any such apparently Steropus madidus. The latter kept

variety of this species, I shall be very pleased to make pouncing on its victim, and biting it with fury, and an exchange of shells with him.-W. Gain, Tuxford, the beetle itself, as well as the gravel around, was Newark. covered with the luminous matter from the centipede, so that its form was distinct, in spite of the darkness.

BATS.-A note appears in your December number I brought the centipede indoors, and it seemed re bats flying during the winter months. It is possible injured. It seemed to me to be unusually luminous,

that they do so, and I should say the reason was, from the excitement it was in from the assaults of this mild weather during the time they were observed. I carnivorous beetle.- John C. Scudamore, Norfolk.

have noted that some hybernating animals seem to Water VOLES.—To substantiate my conjecture as

sufter, owing to partially renewed activity through

mild winters, more than they would naturally do to the carnivorous habits of water voles, I may mention

through a cold one. The warm weather, when no that it was on the 5th of February, 1884, that I found the

suitable food exists, must cause a waste of tissue, shells in their runs, and amongst them was a quantity

which cannot be replaced until the following spring, of recent excrement of some small animal. With

hence hybernating creatures such as the bat, grass regard to Mr. J. A. Wheldon's suggestion, that it

snake, common lizard, &c., would present a more might have been done by common rats, I believe they

attenuated appearance in the spring following a mild only frequent the water during the summer time.

winter, than if the winter had been cold, and thus There is no building of any kind, I should think,

inducive to complete torpor. I have observed this within a mile of the spot where the shells were found,

with respect to the grass-snake, but not yet with the and although I am often walking by the side of this

bat. However, I have one now under observation, canal, I have never seen a common rat there.-F. H.

which is hybernating in a bird cage, and I notice it is Parrott, Aylesbury.

rather restless on a warm night.-F. W. Halfpenny. MILDNESS OF THE SEASON AT ARUNDEL.-While taking a long walk in Arundel Park on Sunday,

Camel.- A dromedary is a camel, but a camel is November 23rd, I observed several new shoots on the

not a dromedary. This I learned to recognise in lime-tree, with their leaf buds expanding, and in repeated travels in Egypt and Asia Minor. The three or four instances fully developed. A few days dromedary, as its name implies, is a swift animal, a friend of mine noticed some new shoots on the oak and bears the same relation to the camel as the fast tree. These shoots must owe their early development trotting-horse does to the cart-horse, or pack-horseto the then mildness of weather at the time of their these last being strong, heavy and slow. The dromeevolution. Primroses have been gathered here quite

dary is credited with trotting about twenty miles an a month ago.-A. W. Fry.

hour--the torture of such a trot to one unaccustomed

to it is fearful. An Arab bearer of despatches will LARGE UNIOS AND ANODONS IN NOTTINGHAM keep up the pace for hours together. A well-bred, SHIRE.—Mr. Harmer's note concerning the Uniol well-trained dromedary--for there are great difpictorum, 4 l& in., will, I have no doubt, be answered ferences--is valuable. A regular camel or burdenby Mr. Tuxford himself. I will only say that I bearer cannot be forced more than some four or five have collected some from the same locality, as large miles an hour. Having ridden these day after day and larger than the size mentioned. So far as there across the desert, I can say the movement caused by is any doubt as to their being Unios, I can only say the long swinging sort of walk-though not painful that after fifteen years' collecting, neither Mr. Tux: to the rider, causes great fatigue till he learns to ford nor myself would be likely to mistake the species. accommodate his back-bone to the motion of the Mr. Harmer mentions large anodons, 6} in. I took, animal. The Egyptian camel then and dromedary a month since, at Sutton in Ashfield, in this county, have respectively one hump, and a camel judge some 300 specimens of A. cygnea, 150 of which estimates an animal by the plumpness of this storemeasure more than 61 in. One specimen measures house of fat. I never saw a “ Bactrian " or two-humped 7 in., two more 7 in., 30 between 6 in. and 7 in. and camel, till I was east of the Crimea, Yohn Anthony, 50 or 60 between 64 and 63. These are the largest I | M.D., F.R.M.S. have ever seen, but the species has been found much larger (see old numbers of Science Gossip). Speci IRISH PearlS.-In the muddy banks of the tidal mens have been taken at Southampton, measuring river Blackwater, Waterford, buried to the depth of 84in., and in one case as much as 9 in. At Worthing, some inches, is found a shell-fish, commonly known also, very large ones have been obtained, measuring as the sugar-loom, and which are used as bait for 7! in. and 8 in. Should Mr. Harmer be desirous of fishing. In some of these shells have been lately seeing a specimen, I shall be pleased to send him a found a number of pearls, the finders of which looked 6 in. A cygnea, if he will send me his address (see upon them as no value, the shell fish being only exchange column for my own).-Chas. T. Musson. looked for as bait. A few days ago a gentleman

encountered a young lad who had several of these LARGE UNIOS AND ANODONS.-Since writing my pearls in his pocket, and one of these having been note respecting the large shells in Ossington Lake, sent to an expert has been valued at £5, and there is I have paid another visit to that locality. I was no doubt but that a large number of pearls of conpleased to find that one portion where the shells siderable value are lying covered in the mud of the were very plentiful had been untouched by the river.-7. Graves.

“ PECULIAR HailstoNEs.”-In “Nature," vol. 1 of its increased buoyancy. So great is its buoyancy XV., at page 163, your correspondent, Alex. Johnstone, when charged with air that I have seen one raise to F.R.S.S.A. (in the last number of SCIENCE-Gossip), | the surface a dead stickleback which must have will find, I think, a satisfactory answer to his weighed more than ten times the weight of the corixa. enquiries regarding hailstones. The article in When it has descended to the bottom (a task which question is an abstract, with illustrations, of a paper is only performed with the greatest of difficulty, . On the Manner in which Raindrops and Hailstones judging from the zig-zag course the insect is compelled are formed,” by Professor Osborde Reynolds, M.A., in to pursue) it clings to the nearest stone or pebble, which the author endeavours by theory and experi- | and stretches out its two flattened elongated legs, ment to explain the true nature and mode of formation and remains in this peculiar position for some time. of these productions.—7. A. Osborne, M.D., Milford I am of opinion that the function which these Letterkenny

members now perform is analogous to that performed HAILSTONES.—About nine or ten years ago I

by the poisers of a fly, viz. to balance the insect. observed that the form of hailstones was altogether

After it has remained in this position for some time

it performs a number of very comical spasmodic different to what I had in my earlier days been taught

movements by quickly passing its two oar-like legs to assume. I had always been under the impression that they were spherical, in fact, minute blocks of

over its back, and as quickly withdrawing them. To

the ordinary observer, this is done by the insect, ice-frozen rain drops. On the occasion of my

probably for mere pleasure. enlightenment, I was in a field when a heavy hailstorm

A close observer, took place. This admitted of my seeing more perfect

however, detects in these very peculiar motions an

object. This object is nothing less than to break up specimens than if I had been in the street, or on a

and set free parts of its air-bubble which most likely public highway, as there was less probability of their

the insect finds renders its body too light. Its under being broken in their fall. The enormous size of the stones first attracted attention, Lut upon examining

surface where the air-bubble is, looks like a globule of them, it was also found that they were conical with a

quicksilver. The facility with which it bends its legs

in almost any direction is very striking (I mean its smoothish rounded base. The sides of the cone were

middle pair). I think its food consists of the striated towards the apex. Many of the cones had

disintegrated particles of algæ, which I have in the broken apices, but sufficient was left to indicate their

aquarium, and which by some means or other have complete form. Those which were perfect began to

become separated from their respective plants. melt first at their apex, the portion last to melt being

Should my surmise prove correct, then the corixa the rounded base. It is believed that this peculiar

will not only be found a pretty and interesting object form is due to the nucleus (a frozen ice particle) passing from the upper portion of a frozen cloud or

of the aquarium, but also a useful member of it. fog. În its descent it overtakes and adds to itself

Arthur Ayling. other ice particles, these form the originating elements of the hailstone. By continued accumulation of NOTICES TO CORRESPONDENTS. particle and pressure on the edges of the base, they begin to round, until eventually it partly turns over To CORRESPONDENTS AND EXCHANGERS.-As we now and forms the commencement of the cone which is a

as the commencement of the cone which is a publish SCIENCE-Gossip earlier than heretofore, we cannot rapid process. There is much assumption in this

possibly insert in the following number any communications

which reach us later than the 8th of the previous month. theory, but there is evidence of its practicability from To ANONYMOUS QUERISTS.-We receive so many queries the smoothness of the base, the striæ of its sides, its which do not bear the writers' names that we are forced to conical shape and the melting of the apex (the last

adhere to our rule of not noticing them.

To DEALERS AND OTHERS. -We are always glad to treat formed part) before other portions. The firmness of

dealers in natural history objects on the same fair and general the hailstone is proportionate to its size. The larger, ground as amateurs, in so far as the “exchanges” offered are fair the firmer, and the harder its base is to its apex,

exchanges. But it is evident that, when their offers are simply

disguised advertisements, for the purpose of evading the cost of the larger, the heavier, and the greater the speed it

advertising, an advantage is taken of our gratuitous insertion of will travel through the cloud. The size to some

exchanges" which cannot be tolerated. extent infers the depth or density of the cloud We request that all exchanges may be signed with name (or through which it has passed, perhaps both. The

initials) and full address at the end. conical shape of the hailstone is well known, having

W. White.-Apparently your nuts belong to Juglandaceæ, been seen by other observers. Since first seeing it I and are probably Carya amara or porcina. haveoften pointed its shape.-Matt. Hedley, F.R.C.V.S. E. LAMPLUGH (Hull).-You cannot do better than obtain

Dr. Cathcart's new ether microtome, manufactured by Mr. THE CORIXA IN THE AQUARIUM.—This insect

Charles Coppock, 100 New Bond Street, to whom write for its .

“illustrated description." forms a very handsome and interesting object of an

A. L.-For life-history of, and experiments on the common aquarium. It is closely allied to the water boat-fly liver-fluke, see paper by Professor Thomas in “Quarterly (Notonecta glauca), and is very abundant in our

Journal of Microscopical Science" for 1882. A good popular

paper on the subject was also written by Mr. George Dowker, ditches; in fact much more so than the latter. I

F.G.S., of Canterbury, a few years ago. A good description of have several in my aquarium, and they are literally the carthworm will be found in one of the volumes of “Science the life of it. I caught them from the bridged-over

R. H. W.-You will find a good account of Stonehenge in part of a ditch, when fishing for minnows and

the Guide to that place, to be obtained at Salisbury railwaysticklebacks, and where the water is nearly in

station; or a longer one in Ferguson's “Rude Stone Monudarkness. This suggests that they are fond of dark ments' in Great Britain ": for an account of bone caves, sec nooks. Unlike its relation the boat-fly, it swims with

Professor Boyd Dawkins' work on "Cave Hunting." Dr. Hicks'

address on "Bone Caves,” will doubtless be published in the its back uppermost as do other aquatic insects. Its

Transactions of the Society. longest pair of legs are not the last as in the boat-fly, E. E. TURNER (Dublin).-Get Thome's “Botany,'' edited but the middle. It is so eccentric in its habits, that by A. W. Bennett, and published by Longmans. It will its actions often provoke mirth.

exactly meet your wants. I have closely

R. C.-We do not recognise the specimens forwarded to us. studied it for some time past, and find that it Please send fuller details. frequently has to rise to the surface for a fresh supply BALLYWILLIAM.-You will find a good account of the Eu. of air which it does by a series of vigorous darts, and

calyptus in the “Treasury of Botany." It has been planted

in Italy in order to drain the marshes. Its leaves give off a when it has obtained that supply, it regains the

great deal of moisture. The Eucalyptus is sensitive to frost, bottom by still more vigorous darts, in consequence and will not prosper where the nights are frosty.

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A. Shaw.-We do not undertake to name foreign specimensì WANTED, adult specimen of mole cricket (Gryllotalpa vulof natural history. The objects shall be sought up and re garis). Young adder (alive), or other exchange offered. turned to you. You will find Chenu's “Conchyliologie,” of F.W. Halfpenny, 2 Fern Villas, Park Road, West Ham, Essex. help in naming your specimens.

WANTED, a violin, bow, and case; Beattie's' “ Castles of H. W. S. W. B.- The best diagrams for botanical class England and Wales :" C. R. Leslie's “Handbock for Young lectures are those of Professor Henslow's (drawn by W. Fitch), Painters," or any other work on painting, in exchange for wellissued, we believe, under the direction of the South Kensington rooted plants of exotic ferns, blooming greenhouse plants, and authorities.

fine varieties of the Cactus tribe, or British land and freshwater S. C. COCKERELL. --There is, or was, a useful list of British shells, or Britisb Lepidoptera and fossils.-F. R. E., 82 Abbey shells published by Messrs. Mardon, Son & Hall, of St. Street. Faversham. Stephen Street, Bristol, compiled from Dr. J. Gwyn-Jeffreys' Wanted, Cratægi, Hyale, Cinxia, Athalia, Semele, Rubi, “British Conchology," by Mr. H. K. Jordan, F.G.S. The Betulæ, Agestis, Alsus, Argiolus, Comma, Actæon, Elpenor, first part (1866), one shilling, contains all the land and fresh Fuciformis, Villica, Aprilina, Festucæ. Duplicates : Paphia, water species, and the marine as far as Littorinidæ. The second Selene, Cardui, Galathea, Cervinaria, Vetulata, Illunaria, Pupart (1870), one shilling and sixpence, from Rissoa to the end of dibunda, Viminalis, Flavocincta, Trapezina, Persicaria, Ocelthe work. No doubt the publishers would give Mr. Cockerell latus, Tiliæ.-J. Bates, 10 Orchard Terrace, Wellingborough. information about it.-G. S. T.

WANTED, Charles II. hall crown for “ Boy's Own Papers, or James I. shilling for other books.-John T. Millie, Clarence

House, Inverkeithing.

Wanted, good material for mounting, more especially insects : Rare British plants offered for British or foreign Spargania. (in spirit); also a quantity of any one insect (providing it is not S. ramosum, only if in ripe fruit.- Beeby, 14 Ridinghouse Street, common); well-mounted slides given in exchange.-C. Collins, London, W.

25 St. Mary's Road, Harlesden, N.W. WANTED, Sach's “Botany," latest English edition, Mac TRAN-SECTION of stem of Helianthus annuus, double-stained. millan's. Exchange, Watson's “Theological Dictionary,"

in exchange for other good slide ; diatoms specially desired; 1068 pages, and Wesley's “Sermons," a large vols., or offers. send list. Other slides to exchange and unmounted material, J. Wallis, 50 High Street, Deal.

Offers to-P. Kilgour, 163 Dallfield Walk, Dundee, N.B.: A FEW well-mounted sections of human teeth, showing dental WANTED, SCIENCE-Gossip for January and February, 1884; exostosis, in exchange for other well-mounted slides.-Charles will give 6d. each, and pay postage, is clean copies.-J. R. Arnold, L.D.S., 8 St. John's Villas, New Southgate.

Hewitson, The Knowle, Mirfield, Yorks. WANTED, a turntable, also live box for microscope ; exchange Wanted, material for micro-mounting, the following most books, &c.-P., 4 Merridale Lane, Wolverhampton.

desired: micro fungi, eggs of insects (especially those of para: PUPÆ of Myricæ and sea-birds' eggs in exchange for Lepi

sites), whole insects (preserved in spirit for dissection), or doptera or other eggs : also wanted, fresh killed specimens, for

foraminifera: will give in exchange' valentines, knife, or good stuffing, of barn owl, kingfisher, hawfinch, and goldfinch. Give mounted objects.---William H. Pratt, 15 Gill Street, Nottingham. cash or exchange.-R. McAldowie, 12 St. Nicholas Street,

WANTED, paraboloid or Webster condenser; good field-glass Aberdeen.

or induction-coil "offered.-S. C. L., 276 Middleton Road, WANTED, in exchange for set of diaphragms for photographic

Oldham. lens, dissecting-knives, live box, or mounted and unmounted

WANTED, British beetles; will exchange British beetles. objects; unaccepted offers not aaswered.-J. W. W., 445 Shore

lepidoptera, shells, fossils, &c. Send lists of duplicates and ham Street, Sheffield.

desiderata.-Delancey Dods, 47 Chepstow Place, Westbourne WANTED, butterflies and live bat (long-eared) in exchange Grove, W. for fifteen monthly parts of Routledge's “Every Boy's Maga

I SHOULD be glad to correspond with a Coleopterist in one of zine" for 1878 and part of 1879, and twelve numbers of “Photo

the midland or northern counties with a view to the exchange graphic News," 1884. Unaccepted offers not answered.

of specimens during the forthcoming entomological season. J. W. W., 455 Shoreham Street, Sheffield.

I desire to exchange fresh and well-set specimens of LepidopWANTED, the numbers of SCIENCE-Gossip from No. I to end tera for Coleoptera in a similar condition.-Address : W. J. V. of 1872, also from beginning of 1880 to end of 1883, bound or

Vandenbergh, Esq., F.R.A.S., F.M.S., &c., 5 Yale Terrace, unbound, separate numbers preferable, all clean; will give

Leytonstone, Essex.
microscopic slides in exchange, or apparatus and materials.-
Lists from J. J. Andrew, L.D.S. Eng., 2 Belgravia, Belfast.
OFFERED, 50-inch bicycle, with fittings; wanted, centre fire

BOOKS, ETC., RECEIVED. breech-loading gun.--Albert Newton, 24 Ryecroft Place, “Universe of Suns,” by R. A. Proctor. London: Chatto & Ashton-under-Lyne.

Windus.-“ Geology of Weymouth," by R. Damon. London: Well-BLOwneggs of British and American birds for exchange. Standford.--"Natural History Sketches among the Carnivora," -Dr. J. T. T. Reed, Ryhope, near Sunderland.

by Arthur Nicols. London: L. Upcott Gill.-" Aids to Long A Few choice specimens of Anodonta cygnea, from 67 to 611 Life," by N. E. Davies. London: Chatto & Windus.-" The Desiderata numerous, Vertigos, Clausilia Rolphii, &c., named Speaking Parrots, a Scientific Manual,” by Dr. Karl Russ. varieties. Correspondence invited.-Charles T. Musson, 1 Clin London: L. Upcott Gill.--"Rabbits for Exhibition, &c.," by ton Terracc, Derby Road, Nottingham.

R. O. Edwards. London: Sonnenschein & Co.- BiblioWANTED, to purchase secondhand copy of Jeffrey's “British graphy and Index to Climate," by A. Ramsay. London: Conchology."-C. W. White, 2 Woodrow Circus, Pollokshield, Sonnenschein & Co.-"Edible British Molluscs," by M. S. Glasgow.

Lovell. London: L. Reeve & Co.--"The Naturalist's World." WANTED, any species of Naiades from Asia, Africa, South by Percy Lund. Vol. for 1884. Sonnenschein & Co.-" The America, and Australia, New Zealand, or any of the East India | Disk, a Prophetic Revelation," by E. A. Robinson and G. A. islands. For these either liberal exchanges or cash will be given. Wall. London: Griffith, Farran, Okeden & Welsh." Annual The attention of collectors and dealers, as well as scientific so Report of the Metropolitan Public Gardens, &c., Association."cieties, is especially directed to this exchange.-A. G. Witherby, “Scientific Romances,'No. 1. What is the Fourth Dimension ?" Cincinnati, Ohio, U.S.A.

by C. H. Hinton, B.A. London: Sonnenschein & Co.WANTED, bull's-eye condenser polariscope, 2 inch objective, "Book Lore," No. 1.-" Journal of Conchology."-" The all of best make, for Ross' binocular. Will give copies of Gentleman's Magazine."-" Belgravia," "The Journal of Flowers and Flower Lore," ist edition, in 2 vols., Li Is., Microscopy."-" The Science Monthly,"_"Midland Natural Chinese coins, or cash.-Rev. Hilderic Friend, F.L.S, Worksop. list.”—Ben Brierley's Journal.” – "Science."-"American

Will give “Flowers ard Flower Lore" in exchange for a Naturalist." -"The Electrician and Electrical Engineer."good series of micro slides, sections of insects, micro fungi, or American Monthly Microscopical Journal.” - “ Popular foraminifera preferred.-H. Friend, Worksop.

Science News."-"The Botanical Gazette." -“Revue de FORAMINIFERA material (good) wanted in exchange for well Botanique." -“La Feuille des Jeunes Naturalistes."-"Le mounted slides of horn and hoof sections, selected foraminifera, Monde de la Science."-"Cosmos, les Mondes.” &c. &c. &c. &c.-A. C. Tipple, 35 Alexander Road, Upper Holloway, N.

WANTED, fossils from upper miocene, middle eocene of
France, upper miocene of Belgium and Germany, Solenhren COMMUNICATIONS RECEIVED UP TO 13TH ULT. FROM:
stone ; also land shells from Philippine Islands and Madagascar. R. S.-A. S.- M. G.-J. C. M.-J. Č. S.-C. W. W.-
Offered, other fossils and shells. -Miss Linter, Arragon Close, Dr. J. F.-A. R. W.-G. T.-S. A. B.-W. D.-A. G. W.-
Richmond Road. Twiekenham

A. E. P.-. B. B.-S. F.-R. McA.-J. W. W.-E. D.A LARGE lot of botanical books, &c., in exchange for natural E. A. W.-L.'J.A.-A. N.-Dr. J.T.T.R.-W.!H. L.-J.W.history text-books. Desiderata, a few dozens of fine botanical A. W.F.-T. B., jun.-F. H. P. F. E. C.-C. T. M.-C. inicro slides for first-class mounts only, or for rocks and minerals. . N. T.-W. B.-L. E. A.-H. F.-J. T. M.-C. J. Harbord Lewis, F.L.S., 145 Windsor Street, Liverpool, S. C. P.-J. B.-C. R. F.-J. A.-J. W. H.-R. H. W.

WELL-MOUNTED slides of insects in exchange for micro pho J. W. "W.-J. B. (Wellingborough)-J. H. L.-C. C.tographs, diatoms, or foraminifera. Send list.-J. Boggust, E. E. T.-W. G.-J. E. L.-H. W. $. w. B.-G. S. T.Alton, Hants.

T. G.-A. C. T.-P. K.-Dr. A. D.-W. W. W.-C. P. WANTED, collections of wild flowers and plants, or micro H. F.-G. S. T.-Dr. H. W. S. W. B.-F. K.-A. W. L.slides, books on natural history subjects, in exchange for

J. G.-D. D.-D. S.-A. D. W.-A. A.-J. R. H.--M. H.violin.-J. W. Whitehead, 10 Seedley Park Road, Pendleton, $. C. L.-W.0.-J. P. W.-M. J. H.-A. U.-W. H. P.Manchester.

| Dr. J. A. 0.-A. A.-W. J. V. V.-R. C.-&c. &c. &c.

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PUBLISHED QUARTERLY, PRICE Is. 6d. THIS well-known Journal, the recognised organ of the POSTAL MICROSCOPICAL SOCIETY, contains number of valuable and interesting articles relating to every department o

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Other special features of the Journal are “Hall-Hours at the Microscope with Mr. Tuffen West, F.L.S., P.R.M.S., ETC.;” “Selected

scopy, or to any branch of Natural Science, are carefully reviewed. Correspondence on matters of Microscopic or Scientific interest is inserted. There is also a section devoted to " Current Notes and Memoranda," " Exchanges," &c.

THE JOURNAL OF MICROSCOPY AND NATURAL SCIENCe is edited by Mr, Alfred ALLEN, Hon. Sec. of the Postal Microscopical Society, under the direction and with the assistance of the Committee ; and may be had of all Booksellers.

wan. BAILLIÈRE, TINDALL, & cox, 20, King William Street, Strand, W.C.

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Illustrated with Diagrams) to Natural History, Literary, and Scientific Societies, &c. For Terms, &c., apply to Editor of Science-Gossip, carc of Messrs. CHATTO & WINDUS, 214, Piccadilly, London, W.

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Agent for the American Monthly Microscopical Journal, 6. per annum; and Publisher of the Journal of Microscopy, 6s. 6d. per annum, postage included.




157, GREAT PORTLAND STREET. Now ready, the following, forming the first Three Series of COLLINS' " SPECIAL" MICRO SLIDES issued at

los. 6d. per set, each set being carefully selected, and enclosed in a neat cloth racked box : SERIES No. 1.-12 Fish Scales (Opaque) for Monocular or Binocular.

No. 1a.-9 Fish Scales (Polariscope) 3 Fish Skins (Opaque).

No. 2.–12 Slides of Heads of Insects, Mounted without Pressure, and specially showing the structure of the Mouth in Biting and Sucking Orders.

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

CHARLES COLLINS, JUN., 25, St. Mary's Road, Harlesden, London, N.W.

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Life among the Ostrich Hunters. By JULIUS

BEERBOHM. Illustrated.
CAMP NOTES; Stories of Sport and

Adventure in Asia, Africa, and America. By


TIME. By George DANIEL. With Illustrations



By THOMAS Frost.

LOW-LIFE DEEPS. An Account of the

Strange Fish to be found there. By JAMES


TUNIS: The Land and the People. By

the Chevalier DE HESSE-WARTEGG. With 22


A CHEAP JACK. By One of the Fraternity,

Edited by Charles Hindley.


Including the Origin of Signs, and Reminiscences
connected with Taverns, Coffee Houses, Clubs, &c.

By CHARLES HINDLEY. With Illustrations.

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

With a Frontispiece.

By JACOB LARWOOD. With Illustrations.

MAYHEW. Illustrated.

TIONERS: Memoirs of the Sanson Family (1688

to 1847). Edited by Henry Sanson. SUMMER CRUISING in the SOUTH



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