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MICROSCOPIC PREPARATIONS.
FIRST-CLASS SPECIMENS, New and Rare Objects in every Department of Microscopy.

LORD S. G. OSBORNE'S DIATOMESCOPE, Post-free, 12s.
Five Typical Examples of Blood Discs on one Slide, Man, Fish, Bird, Snake, and Frog, Double Stained, 3s. 6d. post-free.
Prothallium of Fern, with

Nitella flexillis, with Anthericea. Archegonia, Is. 2d. post-free.

. ERNEST HINTON.
A

For Paraboloid, Is. 2d. post-free. 12, VORLEY ROAD, UPPER HOLLOWAY, LONDON, N.

(TWENTY YEARS WITH THE LATE E. WHEELER.)

CABINETS FOR MINERALS, FOSSILS, &C. 6 DRAWERS, 20 INCHES HIGH .. 21s. 8 DRAWERS, 26 INCHES HIGH .. 286. 10

.. 458. 12 , Naturalists' Glass-Capped Boxes, Round and Rectangular, from One Shilling

THOMAS D. RUSSELL, 78, NEWGATE STREET, E.C.,

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per Dozen,

WORKS BY EDWARD WALFORD, M.A.-Dedicated by Express Permission to H.R.H. THE PRINCE OF WALES. (New Editions fs 153;.) THE COUNTY FAMILIES; or, Royal Manual of the Titled and Untitled

Aristocracy of the Three Kingdoms. Containing a complete Peerage, Baronetage, Knightage, and Dictionary of the Landed Cominoners of England, Scotland, Wales, and Ireland ; a Notice of the Descent, Birth, Marriage, Education, and Appointments of each Person, his Heir Apparent and Presumptive, a Record of the Offices which he has held, his Town Address and Country

Residences, Imperial 8vo, cloth gilt, 62 ios. THE COMPLETE PEERAGE, BARONETAGE, KNIGHTAGE, AND HOUSE

OF COMMONS. In One Volume, cloth extra, gilt edges, 5s. THE SHILLING PEERAGE.

THE SHILLING KNIGHTAG THE SHILLINGBARONETAGE.

Namaaa

THE SHILLING HOUSE OF OMMONS.
LONDON: CHATTO AND WINDUS, PICCADILLY, W.

SECOND-HAND MICROSCOPES AND OBJECTIVES. A large assortment by ROSS, BECK, COLLINS, SWIFT, and other first-class Makers, on Sale, very cheap

MICROSCOPIC OBJECTS in great variety. Spécialité Physiological and Pathological Tissues. 500 SECOND-HAND PHOTOGRAPHIC LENSES AND CAMERAS By ROSS, DALLMEYER, TENCH, VOIGTLÄNDER, and all other esteemed Makers. The Cheapest and Best Stock in Losra.

New Catalogues gratis on application. Purchases and Exchanges made. Instruments Repaired and Relacquered. SANDS & HUNTER, 20, CRANBOURNE STREET, LONDON.

VERTICAL SECTION NEW PREPARATIONS FIRST LEG OF HONEY
THROUGH ABDOMEN

BEE,
OF QUEEN BEE,
OF INSECTS,

Apis MELLIFICA. Apis MELLIFICA.

Showing the Semi-circular WITHOUT PRESSURE. Showing Ovaries and all

Comb used for Internal Organs.

FRED. ENOCK, Cleaning the Antenna. 25. and 35., Post-free.

I$. &., Post-free. Opaque for Binocular. WOKING.

For Paraboloid. HOW AND CO.'S NEW “POCKET MICROSCOPE LAMP." Very convenient and portable, gives ample Illumination, has all necessary adjustments, is provided with a Cylindrical Case, and can be conveniently carried in the breast coat pocket; when charged

with sufficient Oil to burn for above 3:1 hours, weighs under 12 oz. Price 8s. 6d. Microscopists who are in the habit of exhibiting at the Meetings of their respective Societies and elsewhere.

should provide themselves with this little Lamp. MICRO-PETROLOGY, TYPICAL ROCK SECTIONS, 1/6 AND 2/- EACH. JAMES HOW & Co., 73, FARRINGDON STREET, LONDON.

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, Birmingham, from whom Prospectus can be obtained Now ready, VOL. I., containing 53 Chromo-Lithographed Plates, £1 11s. 64. ; 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, £IIIs. 6d. ; or, accompanied by 36 Preparations, in Cabinet, 44 45. Oui, NOTE.—The Sections of either Volume may be had separately.

All correspondence having reference to Vols. I. and 11, 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,

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WATKINS AND DONCASTER, Naturalists and Manufacturers of Entomological Apparatus and Cabinets.

N.B.-For Excellence and Superiority of Cabinets and Apparatus, references are permitted to

distinguished Patrons and Colleges, &C. Plain Ring Nets, Wire or Cane, including stick, 1/8, 2/5, 2/3. Breeding Cage, 2/6, 4/-, 51-, and 7/6. Folding Nets, 3/9 and 4/6.

Taxidermist's Companion, i e, a pocket leather case, containing Umbrella Nets, 7/6 (self-acting).

most useful instruments for skinning, 10/6. Pocket Boxes, -76; corked both sides, -/9, 1/-, and 1/6.

Coleopterist's Collecting Bottle, with tube, 1/6, 1/8. Zinc Relaxing Boxes, -/9, 1/4, 1/6, and al-,

Ditto, Tin Boxes, 1/6. Ditto, large size, with strap, 613

Ditto, Japanned Pocket Case, fitted with 26 tubes, 5/ . Nested Chip Boxes, 4 dozen, -/8.

(black). Botanical Cases, japanned, double tin, 1/6, 47, 57-,6/-,9/-. Entomological Pins, assorted or mixed, 1/- per oz. (white or Botanical Paper, 1/1, 1/4, 1/9, and 2/2 per quire. (Too heavy Glass Killing Bottles or Tubes ready for use, il-, 1/6.

for post.) Sugaring Lanterns, 2/6 to 10/

Insect Cases, imitation mahogany, 3/6 to 11/-, Sugaring Tin, with brush, 1/6, 2/..

(oz. Cement for replacing Antennæ, -76 per bottle. Mite Destroyer (not inflammable nor dangerous to use), 1/- per Forceps for removing Insects, 2/6 per pair. (Supplied to Store Boxes, 2/6, 4/-, 5/-, and 6/-.

Collectors all over the world.) Ditto, Book Pattern, 8/6, 9/6, and 10/6.

Cabinet Cork, 7 X 3t, best quality, 1/3 per dozed sheets. Setting Boards, flat or oval, i-in., -/6; it-in. -/8; 14-in., ./9 Pupa Diggers, 1/6, 21- Insect Lens, 1/6 to 8/-,

z-in., -/10; 3t-in. 1/-; 3-in., 1/2; 3t-in., 1/4; 4-in., 1/6; Glass Top Boxes, per dozen, 1/8, al., 2/6.

4t.in., 1/8; 5-in., 1/10. Complete set of 14 boards, 10/6. Egg Drills, -/3. Setting Houses, 9/6 and 11/6; corked back, 14/6.

Metal Blow-pipes, -17. Zinc Larva Boxes, 9/-, 1/,

| Setting Needles, 6d. per box. All Articles enumerated are kept in stock, and can be sent immediately on receipt of order. For Sale, a large Assortment of Ova and Pupæ of both British and Foreign Butterflies and Moths.

CABINETS.--Special Show Room.
The following are the prices of a few of smaller sizes; for measurements and larger sizes soe Catalogue (48 pp.)

Incant
Insect.

Pose Minerals and Dried
Eggs. Plants, Fossils, &c.

insect. .
Insect. Eges. Minerals and Dried

889. Plants, Fossils, &c. 4 Drawers .. .. 14/- .. .. 12/6 .. .. 10/6

8 Drawers .... 32/- .. .. 30/- .... 23/6 , .. .. 18/• ... 16/6 ... 15/

10 , .. .. 48/- .... 42/4 ... 40/A LARGE STOCK OF INSECTS AND BIRDS' EGGS.

Birds, Mammals, &c., Preserved and Mounted by First-class workmen. 36, STRAND, W.C. (Five DOORS FROM CHARING CROSS).

CHAS. COLLINS, JUNR. NEW SERIES

NEW SERIES Micro-Inaturalist, (Now Ready). Bristol House, Harlesden, N.W.

(Now Ready). Series No. 5 of my "Special” Micro-Slides consists of the Six following carefully prepared Specimens, mounted without pressure, and Illustrating the Anatomy of the Honey Bee (Apis mellifica): 1. Trophi

1 5. Wings, showing hooklets.
2. Mandibles and Antenna I 4. Third Leg, showing pollen brushes. I . Sting and Poison Bag, stained.

The Set, 6/6. Single Slides, 1/2. Post Free,
To each of the above Slides, a descriptive label is affixed, giving the Sub-Kingdom, Class, Order, etc.,

and each series is sent out in a neat cloth racked bor. A full Detailed ] List of all other Series, together with a Complete List of Mounting Materials and Apparatus,

Free on application. MICRO-SLIDES FOR SCIENCE CLASSES. Mr. PIFFARD'S PATENT COUNTER-SUNK SLIPS now on Sale.

Two sizes are ready, 3-16 and 5-8, at 6s. per dozen. Prasiola Crispa, portion of Thallus, beautiful arrangement of Chlorophyl granules, 1s. Teleutospores of Puccinia graminis, 1s. Spores and Elaters of Aneura Pinguis (Jungermanniaceæ) 1s. Stained and Isolated Conidia-bearing Hyphæ, of a Micro-fungus, probably Polyactis cana, 1s. Lecanora Tartareat, vert. sect. of Apothecium, showing Asci, ls. Atrichum Undulatum, vert. sect., Male Perichtum and Antheridia, ls. Fasciated Stems of Strawberry, Sweet Pea, Tropæolum and Thistle, ls, each.

REMITTANCE WITH ORDER. ENLARGED CATALOGUE READY, POST FREE. B. PIFFARD, Hill House, Hemel Hempstead, Herts. SCHWEITZER’S COCOATINA.

Anti-Dyspeptic Cocoa or Chocolate Powder. GUARANTEED PURE SOLUBLE COCOA OF THE FINEST QUALITY. The FACULTY pronounce it'the most nutritious, perfectly digestible Beverage for BREAKFAST, LUNCHEON, or Supper, and invaluable for

Invalids, and Young Children.'
Being without sugar, spice, or other admixture, it suits all palates, keeps for years in all climates, and is four times the strength of

Cocoas thickened yet weakened with arrowroot, starch, &c., and in reality cheaper than such mixtures.
*** Made instantaneously with boiling water, a Teaspoonful to a Breakfast Cup, costing less than one halfpenny.
COCOATINA possesses remarkable sustaining properties, and is specially adapted for

early Breakfasts.
In Air-Tight Tins, at 1s. 60., 38., 58. 6d., &c., by Chemists and Grocers.

THE GRESHA M
LIFE ASSURANCE SOCIETY.

ESTABLISHED 1848.
Head Office-ST. MILDRED'S HOUSE, POULTRY, LONDON, E.C.

FUNDS, 1884.
Realised Assets ... ... ... ... ... ... ... ... ... ... 23,481,376
Life Assurance and Annuity Funds ... ... ... ... ... £3,391,789

Annual Income ... ... ... ... ... ... ... ... ... ... 2685,369
Moderate Rates of Premium, Liberal Scale of Annuities, Loans granted upon Security of Freehold, Copyhold, and Leasehold
Property, Life Interests, and Reversions; also to Corporate and other Public Bodies, upon Security of Rates, &c.

BONUS YEAR, 1885. POLICIES effected before the ist July 1885 on the profit tables, with annual premiums, will participate in the Bonus to be declared next year, in the manner prescribed by the regulations of the Society,

** JOSEPH ALLEN, Secretary. Prospectus, Reports, and Proposal Forms can be obtained on application to the Society's Agents and Branch Offices, or to

JOSEPH ALLEN, Secretary.

NORTH BRITISH AND MERCANTILE INSURANCE COMPANY

INCORPORATED BY ROYAL CHARTER AND SPECIAL ACTS OF PARLIAMENT. Authorised Capital, £3,000,000. Subscribed Capital, £2,500,000. Paid-up Capital, £125,000. Chairman-JOHN WHITE CATER, Esq.

Deputy-Chairman-BARON SCHRODER. Manager of Fire Department_G. H. BURNETT.

Manager of Life Department and Actuary-HENRY COCKBURN. Foreign Sub-Manager Philip Winsor.

Secretary-F. W. LANCE.

FIRE DEPARTMENT. The Net FIRE FUNDS, irrespective of the Paid-up Capital, now amount to £1,597,295 9s. 6a.

LIFE DEPARTMENT. The LIFE FUND now amounts to £3,458,595 18s. 9d. The ANNUITY FUND now amounts to £536,066 8s, ed. THE PRINCIPLES on which this Company is conducted combine the system of Mutual Assurance with the safety

1 of a large Protecting Capital and Accumulated Funds, and thus afford all the facilities and advantages which can prudently be offered by any Life Assurance Office.

NINETY PER CENT. of the WHOLE PROFITS is divided among the Assurers on the Participating Scale. The PROFITS are divided every Five Years. POLICIES are INDISPUTABLE after Five Years. ANNUITIES of all kinds are granted.

Prospectuses and every Information can be obtained at the Chief Offices LONDON : 61 THREADNEEDLE ST., E.C. WEST END OFFICE, 8, WATERLOO PLACE, S.W. EDINBURGH, 64, PRINCES ST.

BRITISH EMPIRE MUTUAL LIFE ASSURANCE COMPANY

NEW BRIDGE STREET, LONDON. E.C:

Incorporated in the year 1847 under Act 7 and 8 Vict., cap. 110, and further empowered by Special Act 15 Vict., cap. 53. Accumulated Fund ........£1,028,215 | Profits already appropriated . ... £847,000 Annual Income, nearly ...... £200,000 | Claims Paid ........... £1,230, 133

Policies in Force . . . . . . . . . £4,793,942
POLICIES ABSOLUTELY INDISPUTABLE after five years, provided the age of the Assured has been admitted.
PoliciES KEPT IN FORCE when requested by appropriating the Surrender Value to the payment of premiums.
Assurers under the TEMPERANCE SCHEME are placed in a separate Section.
Policies may be effected under the DEFERRED BONUS plan.

EDWIN BOWLEY, Secretary.

MEMOIR OF GENERAL JOHN BRIGGS,

of the Madras Army. With Comment on some of his Words and Work. By Major EVANS BELL. With a Portrait. Royal 8vo.,

cloth extra, 7s.6d. LONDON: CHATTO AND WINDUS, 214, PICCADILLY, W.

OBJECTS FOR THE MICROSCOPE,

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.. 68.

Fungus of Favus Achorion Schoenleinii..
.. .. .. .. 18. 9d. Eggs of House Fly ..

. ..
Y

.. Liver Spots (Chloasma) Mycrosporon Furfur

.. 16.9d. Section of Spine of Echinus

ls. Bd. Acarus of Itch, male and female.. .

Section of Brighton Chalk-shells and organic remains in situ

18. od. Ditto Egg and Larva, on one Slide

Ringworm of Head, showing its effect on the hair ..

1s. od. Section through Finger and Nail of Monkey..

Human Flea (Pulex irritans), male and female on one
..... 18. 9d.
the Bunter

2s. Six Slides to illustrate the anatomy of the Bunter Prawn, including

Anatomy of a Leaf, 9 pieces on one slide ..

2s, od Eyes and Kostrum, Squame, Antennules, Tail Plates, Ambulatory

5 Examples of Blood on one slide, from Man, B

* 5s, feet and Swiinmerets, a most valuable set .. .. .. .. 81

Indian Mosquito .. .. ..

.. 38. The STOKES-WATSON SPARK APPARATUS, to show the combustion of Metals by the Electric Spark with the Microscope or Micro-Spectroscope, as exhibited before the Royal Society. Price £2 2s. or complete with Coil and Battery, £3 10s.

40,000 First-class Specimens, illustrative of every Branch of Study. WATSON & SONS' 1-15th in. HOMOGENEOUS IMMERSION OBJECTIVE, £5 5s.

*** This Glass is unsurpassed at the Price. NEW CLASSIFIED LIST OF OBJECTS (Including the Stock of Mr. E. Wheeler, late of Holloway). ILLUSTRATED CATALOGUE OF MICROSCOPES AND APPARATUS.

Either of the above sent Post Free to any part of the world on application to

tart

APPARATUS; Late of He

W. WATSON & SONS, 313, HIGH HOLBORN, LONDON, W.C.

Opticians to Her Majesty's Government.

Established 1837.

GRAPHIC MICROSCOPY. Ceum of Compas

14,797

Que Zoology

NOV 16 1942
By E T. DRAPER.

TIARAK
No. XIX.-SECTION OF SHELL OF BARNACLE (Balanus sulcatus).

[graphic]

HE cirripeds, or prolonged into a stem-like flexible stalk, in the other

barnacles, in their fixed in a shelly pyramid.
adult condition have Compared with the brilliant hues and elegant
a curious dissimi. configuration of “shells” in all their interesting
larity of form. The varieties, as appreciated by collectors, the appear-
Lepadidæ appear as ance of a barnacle scraped from the bottom of a
pedunculated | vessel has externally no great beauty, or attraction;
masses, and elegant but, like many apparently obscure objects, when
groups of these subjected to microscop

subjected to microscopical examination, it reveals
“necked barna structural peculiarities and adaptation of very
cles” are found on significant interest.
floating timber or In the sessile group of the Cirripedia, of which
wreckage. The Balanus sulcatus and B. tintinnabulum are the most
fixed stem, or prolific and common forms, unlike the compact and
peduncle, is often entire solidity of a shell as generally understood, it
several inches in is composed of four or more thick external articu-
length, thick in pro lated conical plates, supported on a flat adhesive
portion, freely flexi. base, the apices running upwards. Within and
ble, of peculiar enclosed in these are thinner and more moveable

tough texture, processes interlapping, and when reaching the possessing voluntary movement, and surmounted or summit so delicately fine as to become a mere slit of tipped with a conical articulated shell containing the exquisite adjustment for the extrusion of the cirri, or animal, from the apex of which emerge the “cirri.” curly filamentous appendages; these flash out, for Of the same family, although so unlike in appearance the collection of food and purposes of aeration, and are the Balanidæ, popularly known as “acorn shells,” when as suddenly retracted the delicate edges of this sessile, the creature included in a compact although sensitive operculum hermetically close the aperture, somewhat moveable calcareous domicile, firmly at- and the creature within. The growth of these lamitached to the surface of constantly submerged rocks, nated plates of shell is seen by perpendicular and transand the bottoms of ships, enjoying, as the vessel verse ridges, showing expansion in every direction. drives through the seas, the luxury of a vagrant life, The base of fixture is a flat foundation of accumulated and with its singular and well-adapted casting net, calcareous secretions, and in specimens taken from collecting abundant food from the scums and shoals of the hulls of ships, more or less incorporated with the microscopic organisms. The close relationship between paints and deadly oxides of metals used to discourage the Lepadidæ, with their long flexible stems, and their accumulation. But balani generally succeed in the Balanidæ in their shelly boxes, is detected in the eluding these ingenuities. perfect identity of the larval free swimming condition. If a shell be broken into, near the base, inside, At this point their similarity is manifest. When the above the floor of attachment (the point of greatest perfection of this state is attained, the little creature resistance), a part may be seen corrugated, and having seeks a point of attachment : the bottom of a vessel, | a columnar appearance; if a slightly oblique horizontal floating substances, or the solid rock, and fixing itself thin section be cut through this point, the apparently by an outpouring of glutinous cement, in the one case uninviting fragment reveals a structure of adaptability

No. 247.— JULY 1885.

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