HOW TO MOUNT SPECIMENS 45. 
and beveled edges. Slides should be of uniform thickness, and 
they should not become cloudy upon standing 
SLIDE AND COVER-GLASS FORCEPS 
Slides and cover glasses should be grasped by their edges. 
To the beginner this is not easy. In order to facilitate holding 
slides and cover glasses during the mounting process, one may 
use a Slide and a cover-glass forceps. The slide forceps consists 
of wire bent and twisted in such a way that it holds a slide 
firmly when attached to its two edges. 
There are various forms of cover-glass holders, but only two 
types as far as the method of securing the cover glass is con- 
Fic. 45.—Histological Forceps 
cerned. First, there are the bacteriological and the histological 
forceps (Fig. 45), which are self-closing. The two blades of such 
forceps must be forced apart by pressure in securing the cover 
glass. The second type of forceps is that in which the two 
blades are normally separated (Fig. 46), it being necessary to 
Fic. 46.—Forceps 
press the blades to either side of the cover glass in order to 
secure and hold it. There is a modification of this type of 
Ser Gara 
Fic. 47.—Sliding-pin Forceps 
forceps which enables one to lock the blades by means of a slid- 
ing pin (Fig. 47), after the cover glass has been secured. It is 
