TAPEWORMS. 5 



full growth and maturation of the parasite, and the 

 recollection of this statement, which is based upon 

 interesting facts occurring within my own expe- 

 rience, w r ill often prove of service to you in practice. 

 Let me illustrate it by a case in point. 



CASE I. C. B. was formerly a patient under the 

 care of a physician residing in the city. On two 

 separate occasions, with the request or sanction of 

 his medical adviser, he called to ask my opiDion 

 respecting the nature of the parasite he had passed^ 

 chiefly with the view, I presume, of forming a 

 correct prognosis. On the first occasion the speci- 

 men proved to be an incomplete example of tcsnia 

 mediocanellata. As the head was not present I advised 

 him to submit himself to the same excellent course 

 of treatment (that had been previously adopted) 

 should the parasite return, adding that he need 

 not look for its return until the expiration of 

 about three calendar months. On the occasion 

 of his second visit (June 17, 1865) he brought 

 me a perfect specimen of the beef tapeworm 

 with the head attached, and what was equally 

 satisfactory to me, he at the same time expressed 

 his astonishment that the reappearance of the worm 

 should have occurred on the very day when the 

 interval of thirteen weeks had elapsed. The 

 patient's mind being now completely relieved by my 

 assurances to the effect that he had no other parasite 

 left behind, and that it was impossible for the 



