1893.] 



THE MICKOSCOPE. 



51 



INSTRUMENTS DESCRIBED.— I. 



By the Maker. 



Zentmayer's American Student Stand, Patented 1876. 

 — Responding to our specifications on page 31, the house of 

 Joseph Zentmayer contributes the following : 



This instrument was designed and constructed with the view 

 of enabling students to obtain an instrument combining the es- 

 sential features of a first-class stand, superior optical qualities, 

 and extremely low cost. 



