330 
Increase from birth to maturity. 
CHI PING 
TABLE 10 
The data for the ‘standards’ are jrom table 1 
(Ping, ’21) and for the Norways from table 1 of the present paper. In each in- 
stance the values are the means for the male and female records at the corresponding 
body weights 
| DIAMETERS 
BODY WEIGHT = 
Cell Nucleus 
| im a 
Standards 5.9 19.7 10.8 
178.0 30.5 1350 
TU ARIOS 202 or siete se See oe Ca aw a Saree eae ras prneree 1.54 1225 
Percentage dnGrCases.s ciec.<c 5 sclaicsscieyaie's = sjare afer 55 5 25 
Norways 5.8 16.9 ih 
182.0 27.8 1135, 
Pat insee pedashik cars meshed Sci Wee ele De ets | 1.64 1.36 
PeTrcentace MMCPeAse 55.5 pas «0.0 sige o sicctte eae ale 36 
ganglion (Donaldson and Nagasaka, ’18) 
TABLE 11 
Showing, in the standard Albino and in the Norway rat at about 19 grams and 178 
grams of body weight, the diameters in u of the largest cells and nuclei in the superior 
cervical sympathetic ganglion, compared with those of the cells from the ventral 
horn of the spinal cord (seventh cervical segment) and from the corresponding 
LOCALITY 
Superior cervical sympa- 
thetic ganglion.......... 
Motor cells, spinal cord.... 
Spinal ganglion cells....... 
Superior cervical sympa- 
thetic ganglion. ......... 
STRAIN 
Standard 
Standard 
Standard 
Norways 
aT 19 AT 178 
GRAMS | GRAMS 
Cells 24.2 | 30:5 
Nuelei-<|\ 12.1) |. 1325 
Cells 23.9 29.1 
Nuclei 12.9.1) 15.1 
Cells 21.6 | 34.2 
Nuclei 10.6 | 16.4 
AT 23 GRAMS meee 
Cells | 23.0 | 27.8 
Nuclei | 12.4 | 13.2 
GAIN 
Percent- 
Absolute See 
6.3 26 
1.4 12 
one 99 
2.2 il 
12.6 58 
5.8 55 
4.8 21 
0.8 6 
