quekett's dissecting microscope. 51 



ment of a Simple and a Compound Microscope, the former being 

 most fitted for the preparation, and the latter for the examination, 

 of many kinds of objects ;— and it may be easily adapted to the 

 purposes of dissection, by placing it between arm-rests (§ 134), or 



Fig. 28. 



Field's " Society of Arts " Simple Microscope. 



blocks of wood, or books piled one on another, so as to give a sup- 

 port for the hand on either side, at or near the level of the stage. 

 37. Quekett's Dissecting Microscope. — To the Scientific investi- 

 gator, however, it is generally more convenient to have a larger 

 Stage than the preceding instrument affords ; and in this respect an 

 arrangement devised by the late Mr. Quekett (Fig. 29) will be 

 found extremely convenient. The Stage, which constitutes the 

 principal part of the apparatus, is a plate of brass (bronzed*) nearly 

 six inches square, screwed to a piece of mahogany of the same size, 

 and about 5-8ths of an inch thick ; underneath this a folding flap 



* The Stage-plate is sometimes made of a piece of plate-glass ; and 

 this is decidedly advantageous where Sea- water or Acids are used. 



E 2 



