30 
the disease just as last year we reported the transmission 
in the opposite direction, i. e., from rats to prairie dogs. 
A full report of the work will shortly be submitted for 
publication under the title ^'Hepatic Trichosomiasis, a 
Frequent and Sometimes Fatal Verminous Infestation of 
the Livers of Rats and Other Rodents." 
Amoebic colitis (dysentery) in monkeys. This has been 
the outstanding parasitic problem of the year. In all it 
affected, at one time or another, six animals, four black 
spider monkeys, one marmoset, and one woolly monkey. 
Only one black spider monkey survives, and this specimen 
suffers relapses from time to time which threaten to kill 
each time. We were at first inchned to beUeve, from the 
history of their travels, that the disease had accompanied 
them from the Tropics, but continued study of their 
tissues has led to the conclusion that it was contracted 
en route, most likely at the dealer's storehouse. The 
presence of the disease was first discovered at autopsy 
upon a woolly monkey. This led to examination of the 
stools of all monkeys which had been associated with 
him and amoebae were found in the feces of four. These 
beasts were isolated and treated. We found that emetin, 
administered both hypodermatically and by mouth, had 
no influence in eliminating the amoebae. Fresh grated 
nutmeg promised better for a time, but after a period of 
discontinuance of the drug the organisms reappeared. 
Nutmeg, however, certainly causes symptomatic improve- 
ment, the animal picks up and the stools become firm. 
The organism is neither the human commensal, Enda- 
moeba coli nor the pathogenic E. histolytica; it is probably 
a new species. The manuscript reporting this is written 
and will shortly be submitted for publication under the 
title ^'Report of an Enzootic of Colitis Among Monkeys 
at the Philadelphia Zoological Garden Associated with 
a Tissue Invading Amoeba (Endamoeba browni, n.s.).'' 
Dermatological Studies. 
Villous and keratotic tuberculoid of feet of ruddy 
flamingo (Phoenicopterus ruber No. 5066). This bird 
