xxii 



HARDWICKE'S SCIENCE-GOSSIP. 



SS. LQUISS 



gEl^IEjS ©F JIlCI^0jSC0PIC71Ii 0BJECT$. 



Above 70 Series of Unmounted Objects at Is. each Series, ready 

 for mounting. Also 12 Series of Unmounted Cleaned Diatoms, at 

 3s. each, 12 tubes in each. Also above 50 Series of Mounted Slides, 

 beautifully mounted on 3 X 1 Slips. The Mounted Slides are in 

 Series of 12 for 5s. Also 15 Special Series of Mounted Slides, 6 

 in each Series, at is. each. 



Docophorus. 

 Lipeurus. 



ANIMAL PARASITES. 

 Special Series 17— Six Slides, 4/-. 



j Goniodes. I Pediculus. 



I Haematopjnus. J Colpocephalu 



FERMENTS (Genuine.) 

 Special Series 18.— Six Slides, 4/-. 



Mycoderma Vini. 

 Bacterium Aceti. 

 Leuconostoc mesenteroides. 



I 



Saccharomyces Vini (voung). 

 Ditto ditto (old). 

 Ditto albus. 



TURTLE. 



Special Series 16.— Six Slides, 4/- 



Skin. 

 E. Kidney. 



Heart. 

 Intestines. 



Liver. 

 Lung. 



Sole Agent : Win. WEST, 15, Horton Lane, Bradford. 



Send Stamp for Catalogue of 40 Pages. 



PRIVATE MUSEUM FOR SALE. — Very 

 Valuable Tropical Land Shell Collections, ditto Marine Collec- 

 tions, also British Shells, and Cabinets of Fossils, Minerals, Fluors, 

 &c. ; and a large Collection of Polished Corals. All particulars 

 and price given on application to 



F. M. HELE, Fairlight, Elmgrove Road, Cotham, Bristol. 



ROSS BINOCULAR MICROSCOPE. No. 2. 

 Patent Stand, Concentric Stage and Sub-Stage, latest make 

 and perfect as new. To be sold a little over half-price. 



CHAS. COLLINS, 157, Great Portland Street, London, W. 



W. H. HARWOOD, Colchester, 



Supplies British Macro and Micro-Lepidoptera, 



Living Pupae of Lepidoptera, Coleoptera, 

 Aculeate and other Hymenoptera, Hemiptera, 

 Diptera, Birds' Eg-g-s and Skins, Shells, &c. 



The Specimens are in the finest possible condition, and all the 

 Insects are warranted British, and true to name. Type Collections 

 of the various Orders, Families, Sub-Families, and Genera at very 

 moderate prices. 



N.B. — As the Lists are separate, it is requested that applicants 

 will in each case specify which they require. 



CONCHOLOOY, 



MARINE, LAND, and FRESHWATER SHELLS 



FROM ALL PARTS OF THE WORLD. 



A Large Stock of Choice and Rare Specimens. 



Square Glass-Topped Boxes, from Is. 3d. per doz. 

 Circular, Is. per doz. 



HUGH FULTON, 89, FULHAM ROAD, LONDON, S.W. 



MICROSCOPICAL 



I still forward my list frt 



MATERIALS. 



to all applicants. 



ELECTRO-LACQUER I N E 



The New Rust and Tarnish Preventive. Microscopes, Discoloured Lens 

 Mounts, Live Troughs, and all Metals required to withstand damp can be 

 lacquered while cold, with an indestructible and invisible coating. 

 AGENTS ( 1/3 per bottle, post free. ) WANTED. 



C. H. HESKETH - WALKER, Micro-Specialist, 



12, CHUECH STREET, LIVERPOOL. 



TO MUSEUMS AND PRIVATE COLLECTORS. 



W. K. MANN, NATURALIST, 



(Established 1868,) 

 WELLINGTON TERRACE, CLIFTON, BRISTOL, 



Has now for sale, at reduced prices, one of the largest and most 

 authentic selections in this country of BIRDS' EGrG-S , in 

 Clutches and with Nest. BIRD SKINS. British and EXOTIO 

 LEPIDOPTERA , and Insects generally. Splendid Stock. 

 FOREIGN SHELLS, Natural History Books, CABINET S, 

 and Apparatus. Selections of Shells and Insects, sent on approval 

 Special Offer.— Steel Egg Drill, Brass Blowpipe, and Egg 

 Label List, post-free is. 



NEW PRICE CATALOGUE FREE. 



Mason's Projection Microscope 



BEST FOR ALL PURPOSES AND CHEAPEST. 



Cockermoutli, 

 Dec. ist, 

 1891. 



Dear Sir, , 



I duly re- 

 ceived your Lantern Microscopic Attachment, and have great pleasure in 

 testifying to its capabilities. I have carefully tested it against one supplied by 

 a London firm, and have tried the 1 and 2 inch Objectives against 

 similar powers by five other makers, with the result that your instru- 

 ment was much superior in workmanship and finish, being- perfectly steady 

 (more than I can say for the one I tested it against) under all circumstances. 

 The objectives worked well with either oil or limelight, a perfectly flat field, and 

 well illuminated, and for projection purposes certainly surpassed all the others 

 I tried them against. I consider your instrument perfect in every detail. 

 To Mr. R. G. MASON. I am, yours faithfully, 



(Signed) W. H. YOUDALE, F.R.M.S. 



Full particulars, R. G, MASON, 69, Park-rd., Clapham, S.W. 



THE MICRO-FUNGI OF FRANCE, 



In Micro-Slides, with Explanatory Text. 

 Published by MM. J. Tempere and E. Dutertre. 



From 1,000 to 1,200 species will be issued in Series of 25 species every two 

 months. Each slide will contain two preparations, one transparent for special 

 study, and the other presenting the species in situ.. 



Price of each Series with accompanying Text, 28s. post-free, 

 and registered. 



N.B.— Subscribers arc requested to send their names as early as possible, 

 as 25 collections only will be published. 



J. TEMPERE, 168, Rue St. Antoine, Paris. 



ESTABLISHED 1851. 



BIRKBECK BANK 



Southampton Buildings, Chancery Lane. 



THREE per CENT. INTEREST allowed on DEPOSITS 

 repayable on demand. 



TWO per CENT, on CURRENT ACCOUNTS, calculated 

 on minimum monthly balances, when not drawn below ^Jioo. 



STOCKS, SHARES, and ANNUITIES purchased and sold. 



SAVINGS DEPARTMENT. 



For the encouragement of Thrift the Bank receives small sums on 

 deposit, and allows Interest, at the rate of THREE per CENT, 

 per Annum on each completed £1. Accounts are balanced and 

 Interest added on the 31st March annually. 



FRANCIS RAVENSCROFT, Manager. 



HOW TO PURCHASE A HOUSE FOR 

 TWO GUINEAS PER MONTH, OR A PLOT OF 

 LAND FOR FIVE SHILLINGS PER MONTH, with im- 

 mediate possession. Apply at the Office of the Birkbeck 

 Freehold Land Society. 



The BIRKBECK ALMANACK, with full particulars, post 

 free, on application. 



FRANCIS RAVENSCROFT, Manager. 



MINERALOGY. 



Choice Specimens and Collections for Museums, 

 Students, and Prospectors. Lessons Given. Cata- 

 logues Free. 



SAMUEL HENSON, 



97, REGENT STREET, LONDON, W. 

 Established 1840. 



GOLD MEDALS 



ra pari SB] 



||878 'I889 



