APPARATUS, MATERIAL, AND REAGENTS. 9 



Paper trays. 

 Paraffin. 

 Spermaceti. 

 Xylol. 



Hardening and decalcifying solutions should be 

 kept in stock in quantities according to require- 

 ment. A jacket of brown paper should be pasted 

 round a well stoppered bottle to contain osmic acid 

 to efficiently protect it from light, and it should be 

 kept in a cool place. The celloidin solution may be 

 kept in stock in a wide-mouthed glass bottle, from 

 which small wide-mouthed bottles may be filled 

 according to the number required. To put several 

 pieces of different tissues in the same bottle leads 

 to confusion. 



(C) REAGENTS FOR EXAMINING AND STAINING 

 MICROSCOPICAL PREPARATIONS. 



1. Acetic acid, strong. 



2. Alcohol absolute. 



3. Alcohol 60 per cent. 



4. Alcohol acidulated. 



Alcohol ioo 



Hydrochloric acid i 



