ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



513 



pure carbolic acid. This liquid may be applied to sections on the slide 

 by means of a camel's hair pencil, and will clear other sections instantly 

 without in the least attacking the celloidin. 



Pharmacognostic Microtome and Technique.* — Dr. E. Vinassa has 

 recently made several improvements in the microtome adopted for 

 pharmacological work and described in this Journal, 1886, p. 887. 



In the first place the general construction has been so altered that it 



Fig. 93. 



Fig. 94. 



is now much broader, and therefore allows more play for the manipula- 

 tion of the knife and object-carriers. The object-clamp has also been 

 rendered firmer by a new device. This consists of a plate moved up and 

 down by a long screw, and adjusted so that it supports the object-carrier 

 while it in nowise impedes the play of the carrier about its various axes. 



Zeitschr. f. Wis3. Mikr., iv. (1S87) pp. 295-303 (3 figs.). 



1888. 



2 N 



