144 Experimental Zoology 
striped worms, yellow cocoons, and black moths. The results 
are shown in the table, in which the horizontal lines represent the 
stages of each individual. 
No. or INDIVIDUALS Worms Cocoons MortHs 
116 striped yellow black 
124 white yellow black 
IIL white white black 
108 striped white black 
Thus there are nearly equal numbers of white and striped worms 
(235 and 224); the same holds nearly for the two characters 
of the cocoons (240 and 219). No worms intermediate in color 
were found nor were there intermediate conditions between the 
cocoons.’ It will be seen that all the moths were black (mela- 
nitic), yet Coutagne thinks some influence of the white was 
present. 
(5) Crossing individuals with different characters gives at times 
offspring all like one parent, without the other character show- 
ing any influence in the first generation. For example, an 
individual of a race with white worms, cocoons, and moths was 
crossed with an individual having white worms, but yellow co- 
coons and black moths. All of the cocoons were white. 
An individual of a race having black worms, white cocoons, 
and moths was crossed with an individual having white worms, 
yellow cocoons, and black moths. All of the cocoons were 
white. 
An individual of a race having black worms, white cocoons, 
and white moths was crossed with an individual having white 
worms, yellow cocoons, and black moths. All the worms were 
black, about half the cocoons were yellow and half white (262 and 
248), without any intermediates. All the moths were black or 
blackish, but rarely one was almost white. . 
In a third case an individual of a race having black worms, 
white cocoons, and white moths was crossed with an individual 
* Certain double cocoons that were rejected did not show intermediate colors. 
