344 



MANIPULATION. 



Pig. 227. 



sharpened on a hone, and a magnifier employed to examine if 

 they fit closely together. Those that are provided with 

 notches at the end should have them alternate, that is, the 

 hollow of one should be fiUed up by the elevation of the other, 

 without which, bodies will slip from between them. 



Scissors.— The scissors required by the microscopist are 

 similar to those used by the surgeon, the handles should be 

 straight, and the ends of both blades either sharp pointed, as 

 shown at B in fig. 227, or one may be blunt and truncated; 

 these last should be bent as in fig. 228 ; they will be found 

 exceedingly useful for cutting open tubular parts, such as the 



Fig. 228. 



alimentary canal of animals, when they are laid in a horizontal 

 position in one or other of the troughs presently to be 

 described ; the blunt end serving to move aside or gradually 



