MICROGEAPHIC CAMERA. 181 



A starch box, by means of a piece fastened to its 

 side, is clamped to an upright piece supported on a 

 base. The top of the starch box holds a piece of- 

 ground glass in a frame. In the bottom of the box is 

 a hole large enough to receive the tube of a microscope. 



To use the apparatus, an object is placed on the 

 stage, the mirror reflects sunlight up the tube, the im- 

 age appears on the ground glass, and is focused by the 

 microscope adjustment. Half a dozen pupils can see 

 the object at once if a large cloth be thrown over the 

 heads of the whole group, thus excluding much of the 

 light. 



