OLFACTORY BULBS OF THE ALBINO RAT pepe 
TABLE 14.. SERIES D 
Final controls 
Males 
OLFACTORY 
OLFACTORY BULBS: 
soars non | mor, | zope, | pean | Sous | eae con 
WEIGHT 
SP i taage Dl) gram) | me lprams.” | grame 
ARG eens Gis Rear cessed 70 100.7 154 1.636 0.061 3.72 
eerie ete ti ckvotane cis 70 90.0 155 1.5388 Bulbs 
unequal! 
MAM ore od cc Sareayaktate 68 132.4 170 1.802 0.084 4.64 
Average males....... 116.6 162 1.719 0.072 4.20 
Females 
aU 3 A Rls A NR ee ae 68 110.8 159 1.780 0.081 4.52 
Meena Se use. ac gece cs Shs 68 115.6 165 1.774 0.077 4.32 
ARR hee hs ve ae iy soll) oy 70 130.5 170 1.704 0.074 4.32 
Average females...... 119.0 165 1.753 0.077 4.39 
Average males and 
femalesn. 945 nyt 118.0 164 1.739 0.075 4.32 
Test Bs 
Cet ea ee 103.7%} 102.1%| 106.8% 
1 Lungs slightly infected. Not included in average. 
weighed, examined, and bulbs preserved exactly as in the under- 
feeding experiments. 
The mated animals were kept about one hundred days longer 
to see whether the exercise of the previous weeks would show 
any effect upon fertility. 
a. Results. General body growth. We find by examination 
of the records of body weight taken at two-week intervals during 
the experiment, that up to the time the larger set of control 
rats fell sick, the exercised animals were gaining less rapidly 
in weight than were the controls. From the time of the illness, 
some five weeks after the beginning of the experiment, the control 
rats fell off in weight, and with a single exception, they never 
recovered. Litter W escaped the infection and the weight 
records for the six rats composing it are as follows: 
