A HOME-MADE MICROSCOPE. 



99 



To proceed, make a rod, like an ordinary ruler, \Z\ inches long, 

 and of the diameter of Fig. 4. Now turn, or get turned, a tube, A^ 

 inches long, the walls of which shall be ^ of an inch thick ; Fig. 5 will 

 give the diameter. 



Fig. 5. 



Fig. 6. 



A part which I call the cradle can now be made; the form is 

 shown in section, at Fig. 6 ; its length must be 3f inches. 



The support for the stage requires no special explanation ; a full- 

 sized drawing is given at Fig. 7. 



The stage itself can be made of wood, but gutta-percha is better. 



Fig. 7. 



and, if j^laced in hot water, it can afterward be easily moulded to the 

 pattern given at Fig. 9. 



Smooth the surface while still warm with glass plates, and steady 

 the back with two strips of wood. The shaded part at the lower edge 

 shows a piece of wood fixed thereon to support a zoophite trough or 

 glass slides. Fig. 10 represents the upper and lower parts of a leg, 

 two of which are required, 9f inches long, and the size shown in cut. 

 On the upper portion the brass hinged attachment is fixed. 



The appearance of the paper tube, with eye-piece and object-glass 

 in position, can be seen at Fig. 11. 



