LECTURE IX. 



Comparative Rarity of Obstinate Cases Reasons for not attempting 

 to operate on the Head of Worm when left behind Cases XXX. 

 and XXXI. The best Time to administer Remedies for Tape- 

 worm Why Caution in this Respect is so very necessary Case 

 XXXII. Advantage of having to treat Patients who are edu- 

 cated Case XXXIII. Circumstances under which Treatment 

 should be delayed. 



GENTLEMEN, It is not often that you will en- 

 counter such cases as the example last quoted ; yet 

 should you do so, by all means assure your patient 

 that his case will eventually prove amenable to 

 treatment. Oftentimes, as I have before remarked, 

 the head of the worm, though not expelled at the 

 time, is discharged separately, some time, it may 

 be, after actual treatment ; and in Case XXIII., to 

 which I incidentally alluded, you have an instance 

 of its expulsion therapeutically, when there was 

 nothing else to operate upon. I would not, how- 

 ever, as a rule advise, as some have done, the repe- 

 tition of anthelmintics immediately after you have 

 succeeded in expelling the body of the parasite, for 

 if your remedies have exerted a poisonous effect to 

 the extent just mentioned, the return of the para- 



