34 
in a paper (July, 1901) written for the Texas Medical News 1 
expressed very positive views to the effect that uncinariasis in man 
must be more or less widespread in the United States, and I discussed 
the disease in general. The position taken was based upon general 
zoologic principles, and, so far as 1 am aware, was the first printed 
definite claim regarding the frequency or probable frequency of the 
malady, in the United States. 
Schaefer (October 26, 1901) next published a case for Galveston, 
Tex., probably infected in Mexico, and made the very important 
statement that Allen J. Smith had found one case in Galveston in 
1893, and since then that he had encountered two [afterwards six addi- 
tional] cases among some 80-odd medical students of the University 
of Texas. 
The importance of this discoveiy by Allen J. Smith should not be 
underestimated. To the clinician it did not mean very much, since 
no record existed that the students exhibited ati}^ very severe s}mip- 
toms. To the zoologist, however, it meant a practical demonstration 
that uncinariasis was more or less common in the South. Here were 
3 [9] students in a cit}^ (Galveston); the chances that the infection took 
place in Galveston did not seem veiy great; as the students came from 
different places (according to personal information), the infection must 
be more or less widespread; and since light cases occurred among 
medical students, heavier infections must naturally occur among per- 
sons who come more regularly in contact with the dirt. Allen J. 
Smith’s observations, the importance of which has not yet been duly 
recognized by medical journals or by his colleagues, led to some cor- 
respondence between himself and me, and he very kindly forwarded 
specimens from one of his cases. In some respects these parasites 
resembled Vncinaria stenocepliala of the dog, and both Allen J. Smith 
and I were fully agreed that they were not identical with Agchylo- 
stoma duodenale. I obtained specimens from Claytor’s case and also 
some material which Ashford had sent from Porto Pico to the U. S. 
Army Medical Museum. All three lots of worms agreed with each 
other, and differed from TJncinaria stenocepliala^ which I had obtained 
from Europe, as well as from JJ, trigonocephala^ from sheep, U. 
radiata from cattle, Z7. Lucasi from the Alaskan seal, and from every 
other species of TJncinaria of which 1 could obtain either specimens 
or description. Accordingly, I described (May 10, 1902) these worms 
as a new species, naming it Uncinaria arnericana. 
Having now an endemic species, with specimens in my possession 
for Washington, D. C. (patient came from Virginia), Porto Pico 
(Ashford’s material), Cuba (specimens sent by Guiteras), and Galves- 
ton (Allen J. Smith’s material), I did not hesitate to state positively^ in 
U. cernua (Creplin, 1829). See Stiles, 1902b, p. 189. 
