A GOOD DISSECTING STAND BY ZEISS 



253 



which we believe to be at present constructed is made by 

 We illustrate this form, fig. 205. It has a large firm stage 4 inches 

 square and 4^ inches from the table, to which wooden arm-rests can 

 be attached or not, as may be desired. Only one is attached in the 



r 



illustration, and the points of attachment of the other are seen. 

 The stage has a large opening, 3 x 3| inches, into which can be 

 placed either a flat brass plate or a glass substitute, or a metal plate 

 with a half-inch hole in it. Underneath the stage are black and 

 white screens, which can readily lie turned aside by the use of the 



