F LAI'S LVI. 



Fig. 0-13. 



Fis;. 312. 



Little bottle for containing glycerine, or 



glycerine and acetic acid, required for 



mounting microscopical specimens. 



p. 301. 



Instrument for measuring the 



thickness of the thin glass. 



p '.'86. 



FlS?. 314. 



Position of microscope and lamp for viewing objects "with high powers The light passes at 

 once to the co^denaer, instead of being reflected from the mirror, p. 288. 



[To face pae'e -285. 



