MASON'S MICROSCOPES 



. 





Height when closed, ^*|LdH^ llL ^ Spread of foot, 



10 in. 



The S.W. Histological and Botanists' Microscope as above Fig. With 

 1 in. 23 and th 80 in Polished Mahogany Case with 1 B Eye-piece. 

 4 17s. 6d. 



This instrument is confidently recommended to Students as thoroughly 

 reliable. The fine Motion is equal to the most expensive, Coarse 

 ditto slides through velvet-lined fitting ensuring a perfectly smooth 

 motion. All fittings are compensated for wear, making it the cheapest 

 and most efficient Microscope ever offered at the price. 



IR,. GK IMI.A_SO:Er 



(From J. SWIFT), 



69, PARK ROAD, CLAPHAM, LONDON, S.W. 



ESTABLISHED 1880. 



Living Specimens for the Microscope. 



JOHN HOOD, F.E.M.S., 



BEGS to intimate to Teachers and Students of Biology, and those studying 

 Natural History with the aid of the Microscope, that he has always at 

 hand the following list of Pond Life: 



PROTOPHYTA, PROTOZOA, BOTIFERA, HYDROZOA, POLYZOA, &c. 



Specimen Tube, with drawings and descriptions, Is. post free. 

 A Series of 26 Tubes, 21s. 



Address: 50, DALLFIELD WALK, DUNDEE. 



