Zo ConcboIOQists. 

 H. B. PRESTON, F.Z.S., 



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

 application price list of any GENERA included in his 



LARGE AND VARIED STOCK OP SHELLS. 



SELECTIONS SEt^T ON APPROVAL. MUSEUMS SUPPLIED. 



A very fine, series of the rarer British Mai-ine Shells now on hand. 



Address-H. B. PRESTON, F.Z.S., 

 3. Sydney Terrace, Fulham Road, London, SW. 



Two minutes iwalk from South Kensington Station. 



I 



W. HARRIS, 176, Bristol Street, Birmingham, 



HORTICULTURAL BUILDER, CABINET MAKER, &c. 



Contractor for Fittings and Joinery Work to The Univei-sity of Birmingham, 

 and the Queen's Faculty of Medicine. 



Estimates given for every description of Woodwork, Cabinet Making, 

 House Carpentry', &c. Repairs prinnptly attended to. 



Living Specimens for the Microscope. 



Volvox, Spirogwa, Desmids, Diatoms, Amoeba, Arcella, Actinosphserium, 

 Vorticella, Stentor, Hydra. Floscularia, Stephanoceros, Melicerta, and many other 

 Specimens of Pond Life. Price 1/- per Tube, Post Free. Helix pomatia, 

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



THOMAS BOLTON, 25, BALSALL HEATH ROAD, Birmingham. 



JAMES SWIFT & SON, 



Mariufacturing Opticiaris, 



Seven Gold Medals awarded for Optical Excellence. 



Student's Microscope fitted with fin. and gin. 

 Objectives, sliding course adjustment, micrometer 

 screw fine adjustment for slow focussing, eye-piece 

 and iris diaphragm, in Cabinet £5 5 



Double nose-piece and extra eyepiece 10 



Fig. 2 Student's Stand, as per illustration with 

 fin. and ^in. Objectives, eye-piece and iris dia- 

 phragm, in Cabinet - - • £7 15 



Double nose-piece and extra eye- piece 15 



Prof. Delepine's microscope, as used in the Birmingham University, with 



course and fine adjustments, extra large stage covered with vulcanite, fin. -gin. 



and iVin- Objectives, Abbe condenser N.A. r2 fitted with iris diaphram and 



special focussing adjustment, triple nosepiece and eyepiece, in Cabinet £15 



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



UNIVERSITY OPTICAL WORKS, 



81, TOTTENHAM COURT ROAD, 



LONDON, W. 



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