The Inheritance of Quantitative Characters in Uaize 29 
instead of in a tassel. The silks protrude from the leaf sheaths 
in advance of the ear-shoots and some days before the pollen is 
shed. The ears are very short and usually have about twelve 
rows of small, smooth, flinty grains. 
California pop is also a dwarf corn, but the stalks are con- 
siderably taller than those of Tom Thumb and have nearly twice 
as many nodes. The tillers are more numerous than in Tom 
Thumb, are mostly of about the same height as The main stalk, 
and like it have one or more ears and end in a tassel. The ears 
are even smaller than those of Tom Thumb and contain numerous, 
irregularly arranged grains. The latter are sharply rice-pointed 
and considerably smaller than the grains of Tom Thumb. Unlike 
Tom Thumb this variety is very late in flowering and in ripening. 
Missouri dent is a large late corn. It blossoms at about the 
same time as California pop. but matures somewhat later. The 
stalks are tall and stout and have few tillers. The latter are 
often short and without tassels or ears and. when tall, almost 
always end in a tassel, but frequently lack ears. The ears are 
rather short for dent corn, but are large in diameter and contain 
numerous rows of kernels — most commonly sixteen to twenty. 
The grains are of a fairly smooth dent type and medium broad 
for corn of that type. They are, of course, very much larger Than 
the grains of either one of the two pop corn varieties. 
The strain of Tom Thumb (No. 00 1 used in crosses with Black 
Mexican was similar to the strain described above in height of 
stalks, number of tillers, earliness. etc., but had slightly smaller 
ears and seeds. 
Black Mexican sweet i No. 54 1 has medium tall stalks and 
fairly numerous tillers. Its ears are long and almost always 
have eight rows of rather broad, wrinkled grains. 
Watson flint (No. 5) has medium short stalks and very long- 
ears with eight rows of grains as the prevailing type. 
Learning dent (No. 6) 1ms very tall stalks and long ears with 
from 12 to 20 rows, 16 rows being the modal condition. 
Of the varieties used in the other crosses, only one character— 
number of rows — is of direct concern to us here. Illinois low 
protein (No. 2) is a dent corn with 12 to 20 rows and a mode of 
16 rows. Illinois high protein (No. 8) is a 12-rowed dent with 
a range from 10 to 18 rows. Early Crosby (No. 18) is a 12-rowed 
sweet corn ranging from 8 to 14 rows. Sf urges' flint (No. 11 i is 
strongly 12-rowed in type, only a few ears having other row 
numbers ranging from 8 to 16. Longfellow flint (No. 15) is an 
8-rowcd type, rarely ever having ears with any other number of 
rows. 
INHERITANCE OF NUMBER OF ROWS PER EAR. 
The maize ear may be regarded either as a fusion of four or 
