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Prothallium of Fern, with
ERNEST HINTON Nitella flexillis, with Antheridea.
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VERTICAL SECTION NEW PREPARATIONS FIRST LEG OF HONEY
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Comb used for Showing Ovaries and all
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Co., PICAL ROCK with this likuleheir respe
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
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SECTION II., BOTANICAL HISTOLOGY; and POPULAR MICROSCOPICAL STUDIES; with 38 CHROMO
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CABINETS.--Special Show Room.
Pose Minerals and Dried
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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.
The Set, 6/6. Single Slides, 1/2. Post Free,
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.
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Cocoas thickened yet weakened with arrowroot, starch, &c., and in reality cheaper than such mixtures.
***, *** ... ... ... ... ... £3,491,376
... £885,369 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.
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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, 75. 6d. LONDON: CHATTO AND WINDUS, 214, PICCADILLY, W.
OBJECTS FOR THE MICROSCOPE,
Fungus of Favus Achorion Schoenleinii..
ls. Od. Eggs of House Fly .. Liver Spots (Chloasma) Mycrosporon Furfur
nur .. .. .. .. 18. 9d. Section of Spine of Echinus Acarus of Itch, male and female.. ..
Is. 60. . .. 48.
Section of Brighton Chalk-shells and organic remains Ditto Egg and Larva, on one Slide
1s. Od . . . . . 68.
Ringworm of Head, showing its effect on the hair .. Section through Finger and Nail of Monkey..
Human Flea (Pulex irritans), male and female on one sli Six Slides to illustrate the anatomy of the Bunter Prawn, including
Anatomy of a Leaf, 9 pieces on one slide Eyes and Kostrum, Squame, Antennules, Tail Plates, Ambulatory
5 Examples of Blood on one slide, from Man, Feet and Swimmerets, a most valuable set
5s, .. .. .. .. 8s, 6d. 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 sen: Post Free to any part of the world on application to
W. WATSON & SONS, 313, HIGH HOLBORN, LONDON, W.C.
Opticians to Her Majesty's Government.
GRAPHIC MICROSCOPY. Ceum of Compas
NOV 16 1942
HE cirripeds, or prolonged into a stem-like flexible stalk, in the other
barnacles, in their fixed in a shelly pyramid.
subjected to microscopical examination, it reveals
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.