DISEASES OF THE HOG. 89 
KIDNEY WORII (EUSTRONGYLUS GIGAS.) 
. Figure 81. 
_ Fig. 81.—This worm is found in the kidneys of 
all the domestic animals and in man, although it is 
very rare. It is a large worm and it is said that 
sometimes the female becomes three feet long and 
half an inch in diameter, although usually much 
less. The male becomes ten to twelve inches long. 
I have never seen any of them so large, as they are 
usually only a few inches long. The body is smooth, 
round and tapering somewhat to each end, and of 
a deep red color. When such worms are present 
in the kidneys they gradually but completely de- 
stroy the substance of the kidney which becomes 
filled with purulent matter, upon which the worm 
feeds, while the walls often become hardened 
with calcarous deposits. The effects andsymptoms 
are the same as in other acute diseases or abscesses 
in one of thekidneys. Theonly positive proof of the 
presence of the worms would be the discovery of 
the eggs in the urine. Itis probable that no remedy 
~ can be applied when the parasite is once lodged in © 
the kidney. The history of this worm is not fully 
known. (Verill.) | 
T have found live worms in.the kidneys of both 
the pig and dog and the kidneys were perfectly 
