INHERITANCE OF WAXY ENDOSPERM IN MAIZE. 91 
The proportions in which the different degrees of correlation are 
expected where colored horny is crossed with colored waxy are as 
follows: 
BSE eT SAY Te a ae REC 20 ears. 
Correlation between colored and horny, 0.615____________ 27 ears. 
Correlation between colored and horny, 0.270____________ 9 ears. 
Correlation between colored and waxy, 0.615____________ 9 ears. 
Correlation between colored and waxy, 0.270____________ 3 ears. 
Tt can readily be seen that a very large number of individuals 
would be necessary to determine whether the ratios, together with 
the expected degrees of correlation, were obtained in the correct pro- 
portions. The results obtained from the cross Dh 333 can be dis- 
posed of rather easily, since only four self-pollinated ears were se- 
cured from the colored horny group (Table XLIII). With three 
of these ears it is not possible to accurately determine the degree of 
correlation to which to refer them, since the number of individuals 
is small. The fourth ear seems to have rather too high a degree of 
correlation between colored and horny to be referred to the expected 
0.766, but the chances of such a deviation being due to an error in 
sampling are about 5.5 in 10. It can therefore be assumed that the 
four ears secured from the cross Dh 333 do not in any way conflict 
with the expected results. 
The remaining crosses, Dh 330 and Dh 3384, have a slightly larger 
number of ears with which to further test the fit of observed to 
theory, but it is not the number of ears, which indeed are far short 
of sufficient numbers to make an accurate test of proportions, but 
from the way in which they are related that the most interesting 
results are obtained. 
Tapite XLIII.—Correlation between the endosperm texture and the aleurone 
color in four ears of maize, the progeny of cgi’ horny seeds of cross Dh 
333 self-pollinated. 
Number of seeds. Percentage of— 
Progeny ear, |] lation, | able 
Total.| WX.| WH. | cx. | cH, |W+*.| error. | waxy. | white. 
1 2 8 4 5 6 | 8 9 10 
CU ee BS rosees 337 16 53 78 190 | —0.153 | 0.103 27.9 20.5 
RE ete a wn wie nila = “eis pise 7 261 14 55 41 151 | — .032 -117 21.1 26.4 
LL os ee epee ape Si Mes ae 33 2 3 9 19 - 169 - 270 33.3 15.2 
RN tebe a Bop = ert o's on o's 424 58 47 39 280 - 800 031 22.9 24.7 
At. first glance the degrees of correlation obtained with the cross 
Dh 330 by pollinating the colored waxy individuals with the colored 
horny individuals and the reverse, together with the few self- 
pollinated horny plants, seem to very nearly approximate those ex- 
