GRAY'S 



BOTANIST'S MICROSCOPE. 



This Convenient Instrument, devised and rnanu- 

 factored first for the use of the Students in 



HARVARD UNIVERSITY, 



has given so great satisfaction there, and else" 

 where, that we deem it a duty to make it better 

 known, and offer it at a price within the reach 

 of all Students. 



