1908.] Hydrochloric Acid m the Gastric Contents in Cancer. 451 
01569 per cent., with a total average of 0°1673 and a variation from 01421 
to 0°2102 per cent. during one hour’s digestion. 
With regard to the one-and-a-half hour period, 12 mice with transplanted 
tumours gave an average of ()'1605 per cent. (Series 22), 11 gave an average 
of 01260 per cent. (Series 23), and 11 gave an average of 0°1246 per cent. 
(Series 24), the general average being 0°1377, with a variation between 0°1013 
Table C.—Percentages of Physiologically Active Hydrochloric Acid secreted by 
Normal Mice during Varying Periods of Digestion. 
Period of Digestion, half an hour. 
(a) Over 12 months. 
(6) Under 3 months. 
Series 12. Feb. 4, 1908. Series 16. Feb. 11, 1908. | . Series 14, Feb. 7, 1908. 
No. of Hydrochloric No. of Hydrochloric No. of Hydrochloric 
stomachs. acid. stomachs, acid. stomachs. acid. 
6 0 °0611 2 0 °12435 6 0 :2167 
1 01790 4, 0 °1476 4 0 °1438 
1 0 +1817 1 0 °1765 1 0°1788 
1 0°1976 | 2 0 ‘1962 
1 O °2037 
10 0 -1129 (av.) | 7 0 °1451 (av.) 13 0 1881 (av.) 
Period of Digestion, one hour. 
(a) Over 12 months. | (6) Under 3 months. 
Series 6—10.* -May 30, | Series 19. March 4, Series 20. March 11, | Series 21. March 17, 
1906—Feb. 28, 1907. | 1908. 1908. 1908. 
Se | 
No.of | Hydro- No. of Hydro- No. of Hydro- No. of Hydro- 
stomachs. | chloric acid. | stomachs. | chloric acid. | stomachs. | chloric acid. | stomachs. | chloric acid. 
32 0 °1374 4 | 0°13853 12 0 -1005 14 | 0 *1260 
14 0 °1992 2 0 °1654 A, O 2006 2 0 °1397 
40 0°1188 He 0 :1686 2 0 °2845 A 0 °1508 
30 0 °1822 | 
26 0°1974 
| | | 
144 0 ‘1488 (av.) 17 0 +1604 (av.) 18 | 0 1432 (av.) | 20 0 1323 (av.) 
a 
* Repeated here from p. 449 for purposes of comparison. 
