ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



873 



of gold-leaf or tin-foil attached to it by shellac varnish, with pointed 

 ends which almost meet in the middle of the slide. One strip passes 



Fig. 202. 



Fig. 203. 



Fig. 20t. 



round to the under surface, where it rests on the brass stage of tho 

 Microscope, and tho other is isolated from the stage and may bo con- 

 nected with tho outer coating of a Leyden jar, the charge of 

 which is made to pass between the points by connecting tho knob of 



