EFFECTS OF DRUGS ON WHITE MICE 145 
while the reverse is true of the second generation; yet the alcohol 
young are larger in both generations. The caffeine adults are 
large but their young are the smallest of all. 
GROWTH OF THE YOUNG NOT SUBJECTED TO THE DRUGS 
The following Table (Table 16) shows the growth of the off- 
spring of drugged parents, not themselves subjected to the drugs: 
TABLE 16 
Growth of the young not subjected to the drugs 
| 
LINE 
AT THREE WEEKS 
AT FOUR WEEKS 
AT FIVE WEEKS 
AT SEVEN WEEKS 
AT EIGHT WEEKS | 
AT BIRTH PER 
MOUSE 
AT SIX WEEKS 
WEIGHED 
AT ONE WEEK 
NUMBER YOUNG 
AVERAGE WEIGHT 
AVERAGE WEIGHT 
AVERAGE WEIGHT 
AT TWO WEEKS 
A WEIGHT | 
AVERAGE WEIGHT 
AVERAGE WEIGHT 
AVERAGE WEIGHT 
AVERAGE WEIGHT 
AVERAGE WEIGHT 
grams | grams | grams | grams | grams | grams | grams grams | grams 
Conitnol=see44- 33 | 1.35 | 2.85 | 4.0 6.2) | 7205) MOO Zar | 1428" 1628 
Mleoholen ks a. 1G) ed) lise4 abe.) 73), Meas IA eon Gal Leonel O52 
Nicotine .=e-..-| 6 1.5 | 2139 4.7 | 6.0 | 8.5 ) 1000314 16-0), 18:0 
Smoked (..2/2.: OP ete 2280" 4K 257) 5.1) | Mel Onan al see 14 S54 
@aiteine:.-..-. Se tG, ja2e2y 40) 5.4) e8z0R) Be Aza() 
| 
| 
WAOKO aero: | 5 
* The weights of the controls are based on both sets of controls in tables 14 and 15. 
From this it is seen that the young of the alcohol line de- 
cidedly excelled all the others in growth. 
COMPARISON OF THE GROWTH OF MICE GIVEN DRUGS WITH 
THOSE NOT GIVEN DRUGS 
The young of nicotine parents that were not given nicotine 
themselves excelled somewhat in weight those young that were 
given nicotine. Tobacco fumes had no appreciable effect, the 
smoked and non-smoked mice growing at about the same rate. 
The young of caffeine parents that were not given caffeine them- 
