16,1 Haughwout and Horriileno: Intestinal Parasites 43 
discomfort or pain; seven gave histories of abdominal pain, 
distention, or diarrhcea, or combinations of the three; and one 
gave a history of distention, tympanism, and vomiting. One 
of them gave a history of attacks of vertigo. Three of the 
thirteen cases were infested with T'richuris to the exclusion of 
all other parasites. The salient features of these cases were 
as follows: 
Case 10. Under treatment for ileocolitis. Gave a history of occa- 
sional abdominal pain before the onset of the ileocolitis. 
Case 56. Under treatment for acute bronchitis. The child was ema- 
ciated. It gave a past history of abdominal distention, 
tympanitis, and vomiting. It had suffered from nervous 
irritability and insomnia. 
Case 97. Under treatment for ileocolitis. Had suffered in the past 
with occasional abdominal pain and had spontaneously 
passed Ascaris in the stool before admission to the hospital. 
The child had once fainted without apparent cause and for 
a long time had been subject to attacks of sweating. It 
had shown a progressive loss of appetite and a slowing 
down of its activities before the attack of ileocolitis. In 
the hospital the stool failed to show the ova of Ascaris 
or any parasite except Trichuris. 
When this study was undertaken we planned to make total 
and differential blood counts and hemoglobin estimations of 
all the cases, but pressure of other duties and other circum- 
stances prevented us from carrying this out. We were able 
to make only a few differential counts—and those of one 
hundred cells only. Unfortunately the three cases noted above 
received no blood examination. This is greatly to be regret- 
ted, for they afforded the only material available to us for 
recording the eosinophilia in pure infections with Trichuris. 
Five of the cases in which Trichuris was the sole helminth 
present were examined and yielded the following percentages 
of eosinophile leucocytes: No. 4, 9 per cent; No. 14, 4 per cent; 
No. 20, 2 per cent; No. 29, 3 per cent; No. 30, 2 per cent. 
Thirteen cases of mixed Trichuris and Ascaris infections 
gave eosinophile counts ranging from 0 to 5 per cent. 
. One case of mixed Trichuris and hookworm infection gave 
6 per cent eosinophiles. 
Three cases of mixed Trichuris, Ascaris, and hookworm gave 
the following eosinophile percentages: No. 9, 4 per cent; No. 22, 
3 per cent; No. 79, 0. 
One case of uncomplicated hookworm infection gave an eosin- 
ophile count of 12 per cent, and one of Ascaris, a count of 2 
per cent. 
