208 GEOLOGY OF THE COMSTOCK LODE. 



often representing a number of slides. Accompanying the collections is a 

 copy of the surface map, showing the position of each specimen with its 

 number. The numbers of specimens of which there are slides are under- 

 lined, and cabinet specimens are distinguished from those of the working 

 collection. The collections are also fully labeled and completely cata- 

 logued. 



