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Note on a Method op Exhibiting Pond Life. 

 By W. Burton. 



Having at times experienced some little difficulty in getting 

 objects, attached to weed or rootlets, into a favourable position 

 for observation, I have lately adopted a plan which is both 

 simple and effective. 



A, is an ordinary shaped tank, into which, before filling, fix a 

 small plug of cork, B, a little out of the centre ; then having 

 filled the tank with a pipette, place the weed against the cork, 

 to which it will readily adhere. Then take another cube of 

 cork, C, fitting loosely, and place it against the weed, which 

 will then be held, as in a vice. 



This is especially useful when the object is on flat weed, or 

 vallisneria, as it is generally found that on putting such into a 

 tank, it either turns round and presents the flat side to the 

 observer, or else floats away to the top, in either case rendering 

 observation difficult, and often impossible. 



A. Ordinary stage tank. 



B. Cork plug fitting firmly. 



C. Cork plug fitting loosely, so that it can be pushed up 



close to B, after the the object is placed in position. 



Journ. Q. M. C, Series II., No. 33. 



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