THE MICKQSCOPE. 



19 



presents the connection of the Wo plates by a rivet, and B 

 the bend in the top or lens holder, C the screw for adjust- 

 ment, and D the hole into which the lens E screws. The 



Fig. 15 



Fig. 16. 



animal being properly secured by the large hooks, and the 

 portion of it to be examined being brought before the hole B 

 by the small hooks, the microscope is so placed, that the light 

 from a window or lamp may pass through the hole, the arm 

 provided with the lens being brought opposite the hole, 

 and over the piece of brass, 1, the lens can be adjusted to or 

 from the object by the screw, 4, and the plate being curved 

 and elastic, will always obey the turns of the screw. This 

 form of instrument appears not to have been constructed for 

 sale in this country, and was never improved upon like the 

 solar microscope, or that for opaque objects. It, no doubt, was 

 entirely superseded by others more generally useful. 



