SECTION ONE 



MICHROME MOUNTANT 



Refractive index 1*515 



A synthetic neutral mountant miscible with alcohol and with 

 xylol. Sections may be mounted directly from 95% alcohol if 

 desired. Does not cause the fading of stains even after several 

 years. This mountant, however, is largely being displaced by 

 Clearmount. 



S.Q.D. BALSAM 



Refractive index i '5 15 



An exceptionally quick-drying, synthetic, xylol miscible, 

 synthetic mountant, similar to Meedol balsam. 



VENETIAN TURPENTE^E 

 For mounting filamentous algae and other delicate material 



Solutions required: 



A. Glycerin 5%. 



B. Venetian turpentine 10% in abso- 

 lute alcohol. 



Technique: 



1. Stain the material in suitable aqueous stains. 



2. Transfer to Solution A, and leave therein for several days in 

 an open dish. 



3. Wash with several changes of 95% alcohol. 



4. Wash with two or three changes of absolute alcohol. 



5. Transfer the material quickly from absolute alcohol to 

 Solution B (10% Venetian turpentine in absolute alcohol), in an 

 open dish. 



6. Place the dish with contents over soda lime in a desiccator 

 for several days until the fluid becomes viscous. 



7. Mount on slides. 



43 



