CHANGES IN WEIGHT OF CENTRAL NERVOUS SYSTEM 683 
TABLE 10—ContTINUED 
PERCENTAGE OF WATER 
SERIES DATE MALES FEMALES 
BODY BODY 
= = ) |) WRIGHT: } iene n Som (0the TES EL GED 
| SERIES GROUP SERIES GROUP 
| 1901 | gms. | | | gms. 
Ce June 19> 3) 80:5; “1 Wels Jet 
Ee eee June ah} 79.9, | 79.9 : 
ae July 4 79.8 80.1) 22.9 | 79.9 pl CE ee 
WG. July 11 78.4 |j | oa) 
UP cast July 18 78.9 |) | b  <79e7 
Cae a July 24 | 80.4 | hizet aces 
Ta eee aly 31 | 77.9 78.7 | 22.9 HG Sualliwce ea Vas 
PAU SRE August Tf Noe tices [meer (s8) 
Bo) Aupustis 14) 27605 : | 77.6 | 
a ale PAIS cis Di Pee 1G: 5 |< 76a by 
23....... August 28 | 78.1 Le Rare) a COA (eee 2 
DA Nes | September 4 | 78.7 | 76.3 
| 
7 oleae September 12 16.3 |) (herd ANN | 
AG eae September 18 | 81.3 || 78.4 | 
27......| September 25 76.8 TMZ cae 77.5 Gee | ar 
7: eke | October See iie eSn0 78.2 
7 eat October 10 | 78.4 | | 78:6" |) 
“(aes October 17 | 77.8 | 81.9 
ie October 24 | 79.4 GUUS) ease 78.5 oO ees 
Be aback October 31 80.5 80.7 
ee November 14 | 79.8) 80.2 
oi ae ee | November 27 | 81.3 |} 80.7] 23.3 82.0 80.7 | 24.3 
aOreeE el Decembery is mee sleOn | 80.0 
| 1902 | 
Biel acs | January 10 8273 ~ |) \ 84.5 | \ 
Bie uetiianery. aie ee eo.3- | {52> | 20 Oe ee eee 
Soar | March 22 | | 
The entry for January 10 and 31, 1902, of M. 82.3 and F. 83.2 
per cent seems very high—but the water in the nervous system of 
these groups was not found to be excessive. These high values 
are probably due to the fact, as suggested by the body weights, 
that these frogs were a year younger than those used for the rest 
of the series. I will return to this matter later. On following 
