Worms; thei}' Description. 273 



bad tenant, and be glad when I have done so. 

 The general symptoms of being troubled with 

 worms are loss of appetite, griping pains and 

 rough coat, and tucked-up belly are symptoms of 

 worms of the larger species, Lumhricus teres, or 

 long white round worm, very much resembling 

 the long earthworm, and varying in length from 

 five to ten inches. Itching of the rectum, evinced 

 by quick twitching of the tail, and a small 

 quantity of mucus, which hardens and has the 

 appearance of white powder, at the anus ; this is 

 indicative of the presence of Ascarides, small 

 needle-formed worms, which lodge in the larger 

 intestines, and frequently find their way in great 

 numbers into the caecum. A third species, 

 though of much rarer occurrence, inhabits 

 various parts of the intestinal canal from the 

 stomach downward ; this is the tapeworm, which 

 is known from its broad, flat, tape-like appear- 

 ance, and consisting of many joints. This 

 species is the most formidable and the most 

 difiicult to remove. In No. 3 of the Fifth 

 Series of Science Lectures for the People, the 

 following description of the tapeworm is given: — 

 ^' There is one group of worms — namely, the 

 Cestoidea or tapeworm. Here we have a truly 

 singular series of creatures. Most people have 

 heard of such worms, but comparatively few have 

 seen any. There is one which is called Tcenia 

 medicanellater ; it is the tapeworm which the 

 human host obtains when it eats underdone beef; 

 it is the most common form of human tapeworm. 

 It is quite a delusion to think that the pork tape- 

 is 



