ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



517 



edge is bent upwards at right-angles, and the middle part is cut away 

 so as not to interfere with high-power objectives. The object-slide rests 



Fig. 136. 



against the turned-up edge. By resting one's thumbs on the plate and 

 one's forefingers on the object-slide, it is possible, with a little practice, 

 to systematically and easily search every part of the preparation. 



B. Technique.* 

 (1) Collecting Objects, including' ; 'Culture Processes. 



New Medium containing Brain Substance for Cultivating Tubercle 

 Bacilli.")" — Dr. M. Ficker finds, from a series of comparative cultiva- 



* This subdivision contains (1) Collecting Objects, including Culture Pro- 

 cesses ; (2) Preparing Objects ; (3) Cutting, including Imbedding and Microtomes ; 

 (4) Staining and Injecting ; (5) Mounting, including slides, preservative fluids, &c. ; 

 (6) Miscellaneous. 



t Centralbl. Bakt. u. Par., l te Abt , xxvii. (1900) pp. 504-11, 591-7. 



