MICROSCOPES 



are well known for 

 EXCELLENCE OF WORKMANSHIP, 

 EASE OF MANIPULATION, 



and MODERATE COST. 



THE NEW 8c IMPROVED MODELS 



possess many advantages over the older type, and 

 embody several important features not to be found 

 in any others. 



The mechanical features in the new modelH, 

 combined with the high quality of the recently 

 improved objectives, place the Leitz Microscopes 

 in an 



UNRIVALLED POSITION 



Prices, with Optical Equipment, from £6 : 10 : 



CATALOGUES 



any of which will be sent free on request 



A— Microscopes (Biological). 



B— Petrological and Metallurgical Microscopes. 



C— Dissecting Microscopes, Lens Holders, Lenses, etc. 



D — Microscopical Accessories. 



E— Spectroscopes and Haematological Appliances. 



F — Microtomes. 



G— Photomicrographic Apparatus. 



H—Projection and Projection-Drawing Apparatus. 



j_Pr.jsm Binoculars for Field and Theatre. 



BLOOMSBURY SQUARE, W.C. 



(A fete doors from the British Museum) 



The Journal of Agricultural Science 



Edited by Professor R. H. BIFFEN, M.A., A. D. HALL, F.R.S., 

 and Professor T. B. WOOD, M.A. 



Published in quarterly parts. The current volume is Volume VI, 

 The subscription price, payable in advance, is 15s. net ($3.75) per volume (post-free) ', 

 single copies 5s. net ($1.25). 



Parasitology 



Edited by Professor G. H. F. NUTTALL, F.R.S., and A. E. SHIPLEY, F.R.S., 

 assisted by EDWARD HINDLE, Ph.D. 



Published about four times a year. The current volume is Volume VII, 

 The subscription price is £1. 10s. net ($7.50) per volume (post-free), payable in 

 advance; single numbers 10s. net ($2.50), double numbers 20s. net ($5.00). Subscribers 

 to The Journal of Hygiene may become subscribers to Parasitology at the reduced 

 rate of £1. Is. net ($5.25) per volume. 



LONDON : Cambridge University Press, Fetter Lane, C. F. CLA Y, Manager 

 CHICAGO : Tiie University of Ctiicago Press 



