EXPP:RIMENT STATION REPORT. 403 



^he cross. While the ' ' Black Mexican " is an 8-rowed variety, the 

 "Egyptian" has no fully-established number over S, and. this vari- 

 ety has had a preponderance of influence upon the rows in the ear, 

 as the table above indicates, where nearly three-fourths of the ears 

 are with more than 8 rows. The same stalk may bear an 8, a 10 

 and a 12-rowed ear, showing that circumstances determine the num- 

 ber upon the same plant, and these may be entirely outside of the 

 combination of the cross. 



Plot IV., Series 0, was planted again to corn, this time with pink 

 grains from 10-rowed ears. There is little to be added to what has 

 been said concerning the results upon the two other plots planted 

 with similar grains. There was quite a uniform increase of the pink 

 grains over that of the previous year, and some ears were found with 

 only red grains. The fact that grain for 10-rowed ears had no 

 marked tendency to produce 10-rowed ears is mentioned elsewhere 

 in tabular form. In this instance there were more S-rowed and 12- 

 rowed ears than those that were 10-rowed, like the parent ears. Sev- 

 eral records of similar observations are necessary for the formation of 

 any general rule that may hold in these cases. 



A portion of Plot I., Series VI., was set with corn started in the 

 greenhouse. The seed did not differ in kind from that used in the 

 plots above mentioned. The corn did not grow for some weeks after 

 being set in the field and made a small growth, but was a week or so 

 earlier than in the other plots. The percentages of red grains and 

 the number of rows to an ear were not different from those elsewhere. 

 There was no decided gain in anything by thus starting the corn in- 

 'doors and setting it out when four weeks old. 



"With 'White and Black Grains. 



Plot I., Series IV., was planted to corn on June 28th, purposely 

 late, to avoid mixing with the plots receiving the pink grains. The 

 seed used was the white and the black grains from ears with over ten 

 rows, the pink grains of which had been planted in Plot 2, Series VI. 



The six eastern rows of the plot were planted with the white grains 

 and the western six rows with the black grains. All else was in 

 common, excepting that six of the white hills were covered with 

 small tents at blooming time, and these are reported upon elsewhere. 

 There was no difference in the plants between the two halves of the 

 ■plot while growing ; that is, the size of stalk, time of blooming, 

 and color of leaf, were uniform. 



