ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



407 



sions for an average-sized person. These holes are closed each by two 

 sleeves, with rubber tape at the wrist to draw them tightly about the 

 arms. The sleeves are 12 in. long, and are tapered slightly to eliminate 

 surplus fullness at the wrist. The inner sleeves, which are tacked on 

 the inner side of the box about the openings, are of black oilcloth, for 

 protection from chemicals as well as to cut out any possible light that 

 might have come through the outer sleeves. These are of fine black 

 sateen, and are tacked to the outer side of the opening (fig. 42). Each 

 sleeve is finished separately with a rubber draw-string, so that should 

 any light pass the closing of the outer sleeve it would be cut out by the 



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41- 



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 -A- 



Fig. 43. 



inner one. On the top, at the left-hand end of the box, is a cylindrical 

 copper tank for holding water (fig. 43, t, and fig. 42). This is 3i in. 

 diam. and 18 in. long, and is provided with a funnel (fig. 43, /, and 

 fig. 42) above for convenience in filling. From the tank a short section 

 of i-in. water-pipe passes into the box, where it is bent to form two 

 elbows (fig. 43, b) to prevent the entrance of light. To this pipe is 

 attached a small faucet (fig. 43, s) through which water can be drawn 

 as needed. The tank screws on to the pipe (fig. 43, d) so that it can 

 be removed for convenience in transportation. Directly below the 

 faucet is a copper pan (fig. 43, c), 5 x 6 in. diam. and lj in. deep, for 

 receiving waste liquids. The drain from this has two elbows (fig. 43, e), 



