688 
Journal of Agricultural Research 
Vol. V, No. is 
Table VIII.— Comparative digestibility of mature beef and immature veal in pepsin- 
hydrochloric-acid solution 
BEEF AND VEAL SAMPLES I 
Experi¬ 
ment 
No. 
Digestion period. 
Filtrate neutralized 
after— 
Pepsin 
1. 
Mgm . 
I. 
8 days. 
4 hours. 
1 0.01 
[ .01 
2.... . 
8 days. 
4 hours. 
( - io 
l • 10 
7 . 
1% hours . 
hour.. 
1 x0.0 
f 
4 &.... 
3 hours. 
hour. 
< IO. 0 
IIO.O 
Percentage of 
beef present 
as— 
Percentage of 
veal present 
as— 
Tempera¬ 
ture. 
Undi¬ 
gested 
residue. 
Acid 
prote- 
inate. 
Undi¬ 
gested 
residue. 
Acid 
prote- 
inate. 
Per 
Per 
Per 
Per 
°C. 
cent. 
cent. 
cent . 
cent. 
79 
4 
74 
5 
1 
79 
8 
73 
5 
1 Room. 
64 
16 
63 
9 
63 
12 
60 
IO 
J 
22 
3 1 
29 
21 
| Do. 
25 
29 
26 
22 
84 
- 4 
85 
4 
43 
(a) 
52 
5 
\ 4 ° 
43 
11 
54 
6 
J 
66 
22 
45 
12 
I 
30 
14 
34 
7 
^ 40 
24 
16 
27 
8 
J 
BEEF AND veal SAMPLES 1.1 
f. 
12 
II 
20 
16 
s c -..- 
46 days. 
24 hours. 
.01 
II 
37 
37 
4 
l .01 
8 
23 
43 
34 
[. 
82 
11 
78 
IO 
6. 
10 days. 
10 hours. 
•10 
15 
38 
42 
34 
l . IO 
*7 
38 
34 
35. 
. 
88 
IO 
94 
6 
7. 
4 hours. 
1 hour. 
< 10. 0 
11 
2 < 
77 
21 
.. 
Uo 
r 
11 
* j 
26 
00 
33 
21 
8. 
.3 hours.■ 
! IO. O 
°7 
2 K 
27 
(io.o 
* j 
25 
* f 
28 
BEEF AND VEAL SAMPLES 2 
Room. 
Do. 
Do. 
40 
9- 4 hours. 
10 . 
11 - 4 hours. 
12 . 
... hour 
4 hours .... 
... hour. 
4 hours .... 
13 
23 days 
4 hours 
84 
6 
79 
4 
10. 0 
27 
7 
21 
7 
10. 0 
30 
7 
21 
6 
78 
73 
IO. 0 
42 
32 
10. 0 
44 
29 
76 
11 
77 
3 
IO. 0 
36 
9 
25 
6 
IO. 0 
44 
9 
28 
6 
80 
77 
IO. 0 
‘53 
32 
IO. 0 
i 
50 
3,3 
74 
14 
73 
9 
IO. 0 
20 
0 
i 5 
0 
IO. 0 
15 
0 
12 
0 
IO. 0 
20 
0 
12 
0 
IO. 0 
23 
0 
11 
0 
,10. 0 
19 
0 
40 
40 
40 
40 
Room. 
a Determination lost. 
6 The flasks containing the 5-gm. portions of hashed beef and veal were kept in cold storage at 2* C. for 
three weeks, during which time autolysis went on. This probably accounts for the small residues in the 
blanks, which contained hydrochloric acid but no pepsin. While in cold storage the flasks contained 
nothing but the meat. 
c Experiment 5 is to be rejected. The continued action of molds during the digestion period invalidated 
the results. 
