280 Proceedings of Indiana Academy of Science 
mixing them with grain in the form of a slop, and pouring this mixture 
into a trough. These pigs were killed on June first, of the same year, 
and the lungs, when examined were found to be badly infested. The 
following table shows the number of worms and lesions that were found. 
The lungs of pig three were badly affected with these worms, al- 
though no localized lesions could be found. Partly developed worms 
were found in all of the bronchi of the lungs, which showed also a 
swollen, oedemic condition. The large number of males present in all 
of these lesions was a noticeable feature, and was doubtless due to 
some selective influence in the culture media. 
Although these experiments are not as conclusive as could be de- 
sired, they undoubtedly prove that partly developed larvae will infect 
hogs under favorable conditions. Purdue University. 
PLATE II. 
METASTRONGYLUS APRI A 
METASTRONGYLUS APRI. 
A. Anterior view of female: a, esophagus; b, mouth with six lips; ec, intestine; 
d, oviduct; e, uterus; f, eggs. 
B. Posterior view of female: c, intestine; d, oviduct; f, eggs; g, anus; h, vulva; 
i, vagina. 
