tro Concboloatsts. 

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



Begs to inform Collectoi-s and otliers that he will be pleased to forward on 

 application price list of any GENERA included in hia 



LARGE AND VARIED STOCK OP SHELLS. 



SELECTIONS SENT ON APPROVAL. MUSEUMS SUPPLIED. 



A very fine series of the rarer British Marine Shells now on hand. 



Address— H. B. PRESTON, F.Z.S., 

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



Two minutes walk from South Kensington Station. 



W. HARRIS, 176, Bristol Street, Birmingham, 



HORTICULTURAL BUILDER, CABINET MAKER, &c. 



Contractor for Fittings and Joinerj' Work to The University of Birmingham, 

 and the Queen's Faculty of Medicine. 



Jilstimates given for every description of Woodwork, Cabinet Making, 

 House Carpentry, &c. llrpairs prompflr a/tended to. 



Living Specimens for the Microscope. 



VoIvoa, S]iirogyra, Dcsinids, Diatunifi. Amoeba, Arcella, Actinosphserium, 

 V'orticclla, Stentor, Hydra. Floseularia, Stephanoceros, Melicerta, and manj' other 

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

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



THOMAS BOLTON, 25, BALSALL HEATH ROAD, Birmingham. 



JAMES SWIFT & SON, 



Mar^ufacturing Opticiatis, 



Seven Gold Medals awarded for Optical Excellence. 



Student's Microscope titted with Vin. and iin. 

 Objectives, sliding course adjustment, micrometer 

 screw tine adjustment for slow focussing, eye-piece 

 and iris diaphragm, in Cabinet - £5 5 



Double nose-piece and extra eyepiece lU 



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

 Sin. 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, -jin. |in. 



and jVin. Objectives, Abbe condenser N.A. 1*2 htted 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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