THE ANIMAL PARASITES 645 
affected. It was hugely distended, fully an inch in 
diameter, and there were numerous confluent ulcers of the 
mucosa covered by a thick slough. The liver showed no 
abscesses. In the histological sections amebse were found 
in the interstices of vital gut tissue just as they are in 
corresponding human lesions. I have not diagnosed the 
species yet, but can vouch that it is not Endameha his- 
tolytica or coli. 
According to Leidy's recommendation, grated nutmeg 
was administered and was followed by an improvement 
in symptoms. The animals became brighter and the stools 
firmer, but the amebas were not eradicated. Emetin 
hypodermically and by mouth had no obvious effects on 
the disease or the amebae. One monkey thus treated mth 
nutmeg recovered, but died the next year of another affec- 
tion and disclosed the scars of the old ulcers in the colon. 
Our experience with this disease, however, is not unique. 
At Washington, D. C.,(29) eight spider monkeys were 
affected, and sporadic cases come to light from the West 
Coast (30), Manila, Khartoum and Ceylon. Prowazek's 
report concerned a young orang(31). Liver abscesses in 
addition to the intestinal lesions were found by three 
different observers. 
As to the transmissibility of monkey amebiasis to 
man, reporters are divided. Both sides are probably 
right, in as much as Endameha histolytica was concerned 
in some cases and non-human species in others. It is 
an infestment to be feared, and calls for examination of 
stools from such newly arrived animals as are known to 
be susceptible (spider and woolly monkeys, orangs). 
Pakasites of Maemosets and Squirrel Monkeys. — I 
give a special place to this subject because Table 24 shows 
that these monkeys are so commonly infested and because 
they are so commonly used as household pets. In this 
(29) Eichhorn and Gallagher, Jour. Inf. Dis., XIX, No. 3, Sept., 
1916, p. 395. 
(30) Macfie, Ann. Trop. Med. and Parasit., 1915, 9, p. 507. 
(31) Arch. f. Protistenk, Jena, V. 26 (2), 22, July, p. 241. 
