1678 



Journal of Applied Microscopy 



When a lateral view is desired, the specimen is pinned to the top of the board 

 near one side, the abdomen is flexed in a natural manner and fastened to the 

 side, the appendages are brought down and secured, and the easel adjusted at 

 the proper angle. It is not difficult to draw the animal when thus mounted, for 

 a proper view is easily obtainable, and the edges of the board serve as guide 

 lines from which to measure. 



For external views and many dissections, the easel is very useful, but when 

 small parts are studied, better results are otherwise obtainable. The lens sup- 

 port above referred to here comes into use. It is made by taking a piece of brass 

 rod -^ of an inch in diameter by 10 inches in length, rounding one end with a 

 file, and splitting the other in the center for an inch with a saw. Two holes are 

 drilled through this end at right angles to the split, and then, after heating, the 

 halves are bent out until the flat surfaces lie in one plane. By means of rivets 

 passing through the small holes, the rod is secured in the middle of a tin ointment 



Some improvised apparatus for work in elementary zoology. 



box lid about three inches in diameter, which, in turn, is filled with melted lead. 

 The standard thus produced is very firm and stable and occupies little room. 



The lens holder attaching the magnifier to the standard is made by taking 

 suitable brass or galvanized iron wire and forming on one end a loop of a proper 

 size to hold the lens, and on the other a close spiral of about four or five turns 

 whose inner diameter is very slightly greater than that of the brass rod in the 

 standard. Two of these are conveniently formed at one time by winding a spiral 

 of eight or ten turns in the middle of a piece of wire twice the length of the 

 desired support. This is then cut through the center and rings formed at the 

 free ends for holding the lenses. It is advantageous to bend the support down- 



