Ho Concboloaists. 



H. B. PRESTON3 F.Z.S., 



Begs to inform Collectors and others that he will lie pleased to forward on application 

 price list of any GENERA included in his 



LARGE AND VARIED STOCK OF SHELLS. 



SELECTIONS SENT ON APPROVAL. MUSEUMS SUPPLIED, 



Address— H B. PRESTON, FZ.S., 

 3, Sydney Terrace, Fulham Road, London, S.W. 



Two ntiniiles zvalkfrom South Kensington Station^ 



JAPANESE SHELLS. 



Faultless specimens of the beauttful and interesting shells of Japan and the 

 Loo Cboo Islands, both land and marine are offered at low prices, sent by mail. 

 The land shells include seme of the finest Helices of the genera Eiilota, Gane- 

 sella, etc. The Clausilias, unlike those of Europe, are the largest of any region. 

 Also many fine operculates and Marine Shells. 



Y. HIRASE, Kyoto, Japan. 



Living Specimens for the Microscope. 



Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actinosphserium, 

 Vorticella, Sti ntor, Hydra, Floscularia, Stephanoceros, Melicerta, and many other 

 Specimens of Pond Life Price l/-per Tube, Post Free. Helix pomatia, Astacus, 

 Amphioxus, Rana, Anodon, etc., for Dissection purposes. 



THOMAS BOLTON, 25, BALSALL HEATH ROAD, Birmingham. 



JAMES SWIFT & SON, 



MANUFACTURING OPTICIANS, 



Seven Gold Medals awarded for Optical Excellence. 



Student's Micr< scope fitted with f in. and \ in. 

 Objectives, sliding course adjustment, micrometer 

 screw fine adjustment for slow focussing, eve-piece 

 and iris diaphragm, in Cabinet - £0 5 



Double nose-piece and extra eye-piece 10 



Fig. 2 Student's Stand, as per illu-tration 

 with f in. and \ in. Objectives, eye-piece and iris 

 diaphragm, in Cabinet - - - £1 15 



Double nose-piece and extra eye-piece 15 



Prof. Delepine's microscope, as used in the Bim.ingham University, with c 'arse 

 and fine adjustments, extra large stage covered with vulcanite, 5jin. ^in. andjijin 

 Objectives, Abbe condenser N.A. 1'2 fitted with iris diaphn^m and special 

 focussing adjustment, triple nosepiece and eyepiece, in Cabinet - ^15 0. 



This stand is used in all the principal laboratories throughout the Kingdom. 



UNIVERSITY OPTICAL WORKS, 



81, TOTTENHAM COURT RD., 



LONDON, W. 



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