Dissecting Microscopes. 87 



this respect in a dissecting microscope need not exceed 1, 

 and it requires very little comparison for the difference to 

 be appreciated. The Steinbeil Loupes of Zeiss are excellent 

 for this purpose, and can be had mounted on a plain stand , 

 or can be adapted to most of the ordinary dissecting micro- 

 scopes, particulars of which can be obtained from the 

 various makers' catalogues. 



