240 



MICRO-PROJECTION WITH DIRECT CURRENT [Cn. IX 



B 



D 



C 



FIG. 134. FACE VIEW OF THE 

 STAGE OF THE PROJECTION 

 MICROSCOPE AND SECTION- 

 AL VIEW OF THE STAGE 

 WATER-CELL. 



(About half size) . 



(From The Microscope, Ninth 

 Edition, 1904). 



A Sectional view of the 

 stage with the stage water- 

 cell. 



S Metal part of the stage 

 in section. 



S w. Stage water-cell. 



gsf Glass front of the stage 

 water-cell. The microscopic 

 specimen rests directly upon 

 the glass front, and heat from 

 the specimen is conveyed 

 away by conduction. 



B Face view of the metal 

 part of the stage of the projec- 

 tion microscope (fig. 121), 

 and the optic bench. In this 

 case the base (E) with V's is 

 of cast iron as is also the 

 block (D). Both were pre- 

 pared on a lathe (Compare 



fig- 158, 159). 



E End view of the guide 

 piece with V's. 



D Apparatus block. 



C Post of the stage in the 

 block socket. Two set screws 

 hold the post in place. It is 

 better to use but a single 

 screw for this. 



The stage proper has a very 

 large opening, and the water- 

 cell inserted in this opening 

 permits of the demonstration 

 of specimens up to 65 mm. in 

 diameter. 



specimens like those of 

 the nervous system 

 stained with Wei^ert's 

 hcn~.atoxylin, or by the 

 Gol^i ir.cthod absorb a 

 <rreat deal of the li<rht 



