LECTURE XIX. 



Bots from the Human Intestinal Canal Difficulties may arise as to the 

 means of distinguishing Genuine from Spurious Cases Maggots 

 may lodge beneath the Skin Cases LXXVI. to LXXVIIL 

 The Larvae of Flies may give rise to disagreeable Symptoms 

 Cases LXXIX. to LXXX. The Harvest Bug and the Gigger. 



GENTLEMEN, At this point I may mention that 

 numerous instances of insect larvae occurring in 

 the human intestines have from time to time been 

 brought under my notice ; and I have also to record 

 the fact that such creatures occasionally take up 

 their abode beneath the skin. I now show you a 

 specimen of human hot which I received from Mr. 

 Alfred Higginson, of Liverpool ; and in the College 

 of Surgeons you will see a small insect larva which 

 was presented to me by Dr. Kirk, who had removed 

 it from Dr. Livingstone's leg whilst they were 

 travelling together in Africa. Through the kind- 

 ness of friends I have obtained a great variety of 

 spurious worms of this sort, and of other pseudhel- 

 minths, some of which undoubtedly were parasitic, 

 whilst others were erroneously interpreted to be 

 such. In truth, it is not always easy to decide ; at 

 least a correct diagnosis is difficult when you can 



