NEW CATALOG "'MICROTOMES 



Containing full descriptions 

 and Photographic Illustrations 

 of our entire line of remodeled 

 microtomes and accessories, 

 including several 



NEW MICROTOMES 



This new series is the most 

 complete and practical ever 

 listed, and every user of a 

 Microtome should have a 

 copy of the book for refer- 

 ence purposes, if for no 

 other reason. Mailed free. 



Bausch & Lomb Optical Co. 



New York ROCHESTER, N. Y. Chicago 



Methods in Plant Histology 



By CHARLES J. CHAMBERLAIN, A.M., Ph.D„ S^SSS^rfSSLi 



Chicago, Illinois 



