CHAPTER VI 



THE PREPARATION AI^D MOUNTING OP PERMANENT 

 OBJECTS 



The worker will find it desirable to prepare and 

 mount objects so that they may be permanently 

 preserved for future examination. This work has 

 become a fine art, indeed, a science ; and literature 

 relating to it is voluminous. I shall not burden the 

 reader with a bewildering mass of details, but con- 

 fine myself to the description of some simple 

 methods, by following which the student will gain 

 the knack of the work, and be prepared to foUow 

 more elaborate methods as occasion demands. The 

 directions I proceed to give will be all that are 

 necessary for the guidance of the beginner. 



The mounting of opaque objects is a comparatively 

 simple matter. The following articles are necessary : 



1. A supply of 3-inch by 1-inch glass slips. These 

 cost from 2d. to 6d. a dozen, according to quality. 

 It pays to use the best. 



2. Some thin cover - glasses ; circles from f to 

 I inch diameter, and a few squares will be useful. 

 An assortment can be had at the rate of about 

 Is. per I ounce. 



3. A turntable (Fig. 23). This consists of a 

 smaU block of wood on which is mounted a revolving 



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