146 L. B. NICE 
TABLE 17 
Comparison of the growth of mice given drugs with those not given drugs 
; 2 : aid 
m Dm mM ) Q m 
5 a aa a & Bp ae ae a8 aE ae 
mit lsseeaa es | ee | 2 Fe | Fe | Fe 
MICE ng |8@a| as ae ag ap a @ a af | af 
Bo | Onn | O4 oF oe oko) og ok OB oe 
Bea eee cee | a) ee ee 
ae |de2| ge | gs | ge | ae | ae | Be | ae | ag 
Mwah ee ieee Lo | eau 
| grams | grams | grams | grams | grams | grams | grams | grams | grams 
NO OMETOLA Cie veh: 33) iso) 2285 400 6:2 | 7207 AOLOn 1207 | 14.8)| 1628 
Without | 
alcoholt.....| 16 sierra 9) UlRes4 (3 14 ae 36.| 176") tOr2 
With alcohol* .| 39 | 1.32 |3.3 | 4.97 | 6.5] 9.6 | 12.1 | 14.0 | 16.2 | 17.5 
Without 
mcotine;.. 6-6 om aon ivacer, 6.0] 8.5 | 10.9 | 13.4 | 16.0 | 18.0 
With nicotine*} 42 | 1.33 /3.0 | 4.3 5.5 | 8.0] 10.5 | 12.6 | 14.4 | 15.1 
Nonsmoked{..| 9 | 1.1 | 2.89| 4.25] 5.1 | 7.1 | 10.5 | 13.2 | 14.8 | 15.4 
Smoked™ 23... Ot, 22a eee 5.7 | 8.0 | 10.5 | 13.0 | 14.4 | 15.3 
Without | 
caffeine} ..... So Nel Ge Mesa ae@ 5-4) 8.0 | 10.97) 13570) 215.247 20 
With caffeine..| 27 | 1.3 | 3.0 | 4.2 5:3 | Cad | LORI LON ea 339 
* These weights are the averages of the two generations from tables 14 and 15. 
+ These weights are from table 16. The parents were subjected to the drugs. 
selves grew faster than those given caffeine. Although the young 
of the aleohol mice when given alcohol themselves excelled all the 
other mice in growth, other young of these same mice when not 
given alcohol grew even faster. The control mice grew faster 
than the caffeine mice, were excelled by the alcohol mice but 
grew at about the same rate as the nicotine and smoked mice. 
I wish to thank Dr. C. F. Hodge for criticism, Dr. Louis N. 
Wilson, librarian of Clark University, for securing the literature, 
and my wife, Margaret Morse Nice for aid in keeping the records 
and preparing the manuscript. 
‘SUMMARY 
1. The control mice had the fewest young of any of the lines; 
the fecundity of the alcohol, nicotine and caffeine mice was some- 
what greater, while the mice subjected to tobacco fumes in both 
generations had almost twice as many young as the controls. 
