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HYDATIDS. 



The following is a sketch of the cerebral hydatid, 

 of the natural size, and is accompanied by a magni- 

 fied representation of one of the heads. The common 



CEREBRAL HYDATID, A. ONE OF THE HEADS MAGNIFIED, B. 



hydatid,* which is found in the liver, the abdominal 

 cavity, and in the cellular tissues of animals, agrees 

 generally in its characters with the preceding ; but 

 it has only one head terminating a portion of the 

 cyst, which appears as if drawn out like the neck of 

 a Florence flask. It is furnished with suckers, and 

 the oval orifice is surrounded with arms. 



The reproduction of these curious animals is 



* Cisticurcus tenuicollis. 



