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- 



FIG. 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 



FIG. 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 



FlG. 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 



