Cleaning, Labeling, and Storing Slides 171 



ever, no objection to the storage of sections on edge, and many thousands 

 of slides stored by this method can be kept in the space occupied by 

 only a few hundred when they are stored flat. 



Another method of storing slides, which is particularly useful in the 

 case of serial sections involving many dozens of slides in each series, is 

 to take two 3- by 5-in. index cards and to cut about an inch from the long 

 edge of one of them. They are stapled together, making a series of pockets 

 into each of which a slide may be inserted. The full data connected with 

 the slide may be written on the card, which may be stored in any of the 

 ordinary card-filing cabinets that are available. 



There are many types of small boxes made that have grooves to hold 

 the slides. It is to be remembered with these that the slide must be kept 

 in a horizontal position if it is a wholemount. 



There is a considerable case to be made out for "ringing" the edges of 

 coverslips with a colored varnish, not only to improve the appearance of 

 the slide but also to increase its permanence. This procedure is described 

 in full in Gray's "Microtomist's Formulary and Guide," and space does 

 not permit it to be given in the present text. 



