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NEW YORK ZOOLOGICAL SOCIETY 



bean. The head is globular in form, the size of a pin's head, 

 and has a projecting proboscis or rostellum, around which are 

 arranged a double row of booklets, 24 to 30 in number. These 

 hooks are composed largely of inorganic matter, and are almost 

 indestructible, resisting degenerative processes, and may be 

 found long after the organic parts have disappeared. This 

 hydatid is principally found in muscles of swine. Its presence 



ANTELOPE'S HEART, SHOWING 

 CYSTICERCI CELLULOSA. 



CV.^I ILKKCLS KRO.M SPANISH 

 IBEX. NATURAL SIZE. 



here during life can occasionally be detected by a string of hyda- 

 tids on either side of the tongue or floor of the mouth. In pork 

 these hydatids give the muscles a pale, moist, and flabby feeling, 

 and this condition is spoken of by meat inspectors as measly pork. 

 This flesh does not cure very well, and is not fit for human food. 

 In certain countries, taenia, wdth rare exceptions, infects all 

 the inhabitants, among whom raw cow's flesh is looked upon as 

 the greatest delicacy. In this instance, both men and cattle fur- 

 nish the conditions favorable to propagation. 



