OF THE MICROSCOPE. 



183 



the shore. Accompanying the cane, A, are the hooked knife, 

 B, and the ring and bottle, C. These are made with a double 

 screw, so that they may be attached either to the end of the 

 cane itself, or to the inner rod, and in this way we can have 

 either a short and stout handle, or a longer and more slender 

 one, as circumstances may require. The bottle is made so as 

 to screw into the brass ring, and the same screw enables us to 

 fit a wooden cap on it, which thus encloses the contents tightly. 

 The hook is made of fine steel, and has a sharp cutting edge, as 

 seen in the engraving, so that it is easy to cut off a piece of 

 weed, drag it out of the water and secure it. 



Those who carry such a 

 cane do not attract attention 

 by any unusual parapher- 

 nalia, and at the same time 

 they are at all times ready to 

 secure any valuable material 

 that may present itself. Sev- 

 eral bottles may be carried in 

 the pocket, and screwed into 

 the ring as required. 



The collector who desires 

 to make a thorough examina- 

 tion of the microscopic flora 

 and fauna of any pool or 

 stream, must not rest content 

 with infinitesimal quantities 

 <>f material. It is not neces- 

 sary, however, to lug home a 

 galloii of water for the sake 

 of the objects contained in it, 

 and so fully have microscop- 

 ists been impressed with this 

 idea, that the devices which 

 have been prepared for strain- 

 ing out the. valuable portions 

 are almost endless. The best 

 and simplest that we have 

 seen is* a modification of an 



Fig. 58. WATEB-STRAINER. 



