// ?s 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 ; of). 

 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 

 / do not think anything better can be made fof 

 the 



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

 " " three " 250 



1 Sale by 



IVISON, BLAKEMAN, TAYLOR & Co., 



Publishers of GRAY'S BOTANIES. 



