// is attached to a box, one and a half inches 

 high and less than four inches long, into which 

 it is neatly folded when not in use. The needles 

 are used for dissecting flowers, or other objects,- 

 too small to be otherwise handled for analysis. 

 The lenses magnify about fifteen diameters; or 

 with three lenses, about one-third more. 



A thousand things about forest, field or garden, 

 afford objects of intense interest for daily study. 

 Prof. ASA GRA Y, of Harvard University, 

 our popular American Botanist, says of it : " You 

 are at liberty to call it the ' GRAY'S MICROSCOPE. 1 

 / do not think anything better can be made for 

 the money" 



Price of Microscope, with two Lenses, - $2 00 

 " three " 250 



For Sale by 



IVISON, BLAKEMAN, TAYLOR, & Co.. 



Publishers of GRAY'S BOTANIES. 



