GENETICS: C. B. DAVENPORT 
121 
distribution of tendencies in the offspring. Males: W, 133; not W, 109; 
females: W, 4; not W, 118. The shortage of not-W males is easily 
accounted for by the circumstances that only fraternities of offspring 
showing nomadics are included in our table; any fraternity which by 
chance, through small size or otherwise, shows no nomads is excluded. 
Of the four female nomads (where none is expected) it is to be said that 
all are daughters of three men who are really quite insufffciently known 
and ought not to be considered in this connection. The details are set 
forth in the full paper. There is no clear case of a nomadic daughter 
whose father is known to be non-nomadic. 
Table of Distribution of Nomadism (W) in Offspring of Various Matings 
OFFSPRING 
PARENTS 
TOTAL 
X 
tyg 
9 
w 
notW 
W 
not W 
1. Father not W, of not-W strain; Mother 
not W, of W strain 
208 
13 
29 
71 
43 
1 
52 
2. Father not W, of not-W strain; Mother, 
W 
9 
1 
1 
5=t 
(3=^) 
0 
0 
3. Father and Mother both W 
13 
0 
2 
6 
1 
4 
0 
4. Father, W; Mother not W, of W 
strain 
35 
6 
7 
8 
5 
2 
7 
5. Father W; Mother not W, W relatives 
unknown 
73 
17 
6 
16 
16 
5 
13 
6. Father not W, of W strain; Mother 
not W, of W strain 
3 
0 
0 
1 
0 
0 
2 
7. Father not W, of W strain; Mother 
not W, W relatives unknown 
55 
8 
6 
13 
16 
1 
11 
8. Relatives of father and mother (and 
frequently the parents themselves) 
little known 
218 
33 
28 
51 
47 
2 
53 
Abbreviations: W, wandering impulse, nomadism; x, unknown; fyg, died young. 
The criterion that all sons of a nomadic mother are nomadic is tested 
by reference to matings 2 and 3. All but four sons are nomadic. Of 
the exceptions three are recorded with great doubt and one with much 
lack of detail. 
The next criterion, that all daughters of two nomadic parents are 
nomadic is realized, in mating 3, unfortunately in too small numbers. 
The criterion that half of the daughters and half of the sons of nomad- 
bearing fraternities derived from nomadic fathers are nomadic may be 
tested in matings 4 and 5. The expected equality is, indeed, found in 
the sons but, probably on accoimt of small numbers, inexactly in the 
