STRONGYLIJS ARMATUS. 
395 
orse-breeder, to agriculture, and to the general welfare, it is 
t the highest importance to discover means which should 
revent the introduction of the embryos with the food, and, 
5 a consequence, the migration of the palisade worms into 
le mesenteric arteries of the horse. 
In calling your attention to this subject, old as it is, I hope 
have not encroached too much on your valuable time. If I 
ave been able to cause one of you to ask yourself: Can 
le statements made be sustained by post-mortem examin- 
don?—for I think we have been able to—then, with the 
iterest of your profession at heart, I hope you will open the 
>ook of Nature, and determine the fact for yourselves. 
EXPLANATION OF PLATES. 
Plate I. 
.g. 1.—Male: a, caudal pouch; b, spicula. 
ig. 2.—Female: a, vulva; b, anus. 
ig. 3.— a, capsule; b, longitudinal line or rib; c, anterior teeth; d, anterior 
cilia; e, papillae; /, posterior papillary bodies or plates; g , anterior 
armed pharyngeal ring; h, pharyngeal capsule; k , anterior con¬ 
stricted portion of oesophagus ; l , posterior ventricle or bulb, 
g. 4.—c, anterior teeth; d, anterior cilia, 
g. 5.— b, longitudinal line or rib; /, posterior plates, 
ig. 6.—Anterior cilia, 
tig. 7.—Anterior papillae, 
g. 8.—Fine anterior teeth, 
ig. 9.—Caudal pouch of male; b, spicula. 
g. 10.—Posterior moiety of female ; b, anus. 
g. 11.—Undeveloped or agamous worm, in thin transparent membrane, which 
is shed on reaching maturity, 
g. 12.—Ovum. 
(These drawings are original , and made by Dr. J. M. Parker .) 
Plate II. 
•g. 1.—Caudal extremity of the male Sclerostoma equinum (Neumann.) 
ig- 2.—Fragments of the coecum of a horse showing the tumors of different 
sizes due to the sclerostomes, as well as parasites fixed on the mucous 
membranes (Neumann.) 
Plate III. 
ig- 1-—Verminous aneurism of the great mesenteric artery; one-half natural 
size (Railliet.) 
ig. 2.—Abdominal aorta of a horse with its ramifications (Neumann.) 
i 
