40 
Journal of Agricultural Research 
Vol. I, No. i 
frequently the seat of infestation, and these muscles may be considered 
as perhaps a preferred location, though this is uncertain. That the 
tongue is a common location has been established by Dr. W. J. Stewart 
of the Bureau of Animal Industry, who has found that about one-half of 
i per cent of the tongues of all sheep slaughtered at his station are infested. 
LOCATION IN SHEEP CARCASSES EXAMINED IN UNITED STATES 
In the cases given in Table I the carcasses were examined by slicing the 
musculature. The number of cysts found in various locations is given. 
The number found in the head in some instances includes cysts found in 
the tongue. The columns designated “Superficial” and “Deep” refer, 
respectively, to cysts elsewhere than in the heart, diaphragm, and head 
which were either found on a superficial examination of the dressed 
carcass (Superficial) or were embedded in muscle so that they were found 
only on dissection (Deep). Cases Nos. i to 6 were examined by Dr. I. C. 
Mattatall at National Stock Yards, Ill.; Nos. 7 to 12 and 13 to 16 by the 
writer at Seattle, Wash., and Portland, Oreg., respectively; Nos. 17 and 
18 by Dr. R. E. Holm at Wallace, Idaho; No. 19 by Dr. E. C. Joss at 
Tacoma, Wash.; Nos. 20 to 25 by Dr. E. C. Joss at Seattle, Wash.; 
Nos. 26 to 32 by Dr. E. C. Joss at Portland, Oreg.; Nos. 33 to 35 by the 
writer at Chicago, Ill.; Nos. 36 to 38 by Dr. I. C. Mattatall at National 
Stock Yards, Ill.; and No. 39 is lamb No. 1 in the experiments already 
reported in this article (pp. 23 and 24). 
Table I.— Location of Cysticercus ovis in sheep carcasses examined after dissection . 
Location of cysts. 
Location of cysts. 
Case No. 
Heart. 
Dia¬ 
phragm. 
Head. 
Super¬ 
ficial. 
Deep. ) 
Case No. 
Heart. 
[ 
Dia¬ 
phragm. 
Head. 
Super¬ 
ficial. 
Deep. 
I. 
I 
1 
0 
21. 
1 or 2 
7 
2. 
1 
I 
y 
22. 
I 
I 
I 
27 . 
i or 2 
4. 
2 
2 
1 
8 
O 
24 .... . 
1 or 2 
c. 
4 
I 
1 
3 
30 
2?. 
1 
c 
6. 
14 
I 
Q 
26 . 
1 
I 
j 
2 
7. 
I 
27. 
1 
2 
8. 
I 
28. 
7 
10 
9. . ., 
I 
20. 
2 
I 
0 
7 
10. 
I 
X 
I 
0 
1 
11. 
I 
21. 
1 
I 
1 
12. 
I 
. 
22 .... . 
1 
1 
12 . 
I 
2 
72 . 
1 or 
2 
I 
7 
O 
14 . 
I 
O 
3 
OO # 
more. 
ic . 
2 
18 
15 
3 
27 
3 
1 
2 
X 1 
l6 . 
I 
6 
0*r. 
2C . 
3 
2 
35 
17. 
I 
I 
O j 
76 . 
18. 
I 
O . . 
27 . 
1 
I 
1 
IQ . 
2 
1 
78 . 
1 
1 
I 
-3 
20 . 
i or 2 
10 
30 2 . 
X 1 
42 
X 1 
X 1 
J 
X 1 
1 X indicates numerous cysts. 
2 This carcass also had degenerate Cysticercus ovis in the lungs and wall of esophagus and degenerate cysts 
in the wall of the rumen and fourth stomach which were probably C. ovis. 
