Percentage of 
sugarinroot 
Fercentage 
x 
Ww 
1916] PRITCHARD—SUGAR-BEET BREEDING 433 
sions. The distributions are fairly regular, therefore, and the 
coefficients are probably reliable. 
en due consideration is given to probable errors,’ the 
coefficients show no correlation between weight, percentage of 
Yield of seed in 1910 
Ounces 
4 678 9iow 2 (32 /t'/5S (6 17 (8 19:20 2/ 22 23.24 
f sugar in the 
t/7/909 
/ 3.8 : 4 
7 
Fic. 5.—To accompany table V 
Sugar, or quantity of sugar of the seed beet and its yield of seed. 
This refers to beets of ordinary sizes such as are grown for factory 
use. Very small beets, o. 5-2 inches in diameter (stecklings), form 
little less seed per plant than large roots, although they grow to 
S Yield of seed in gene in 191) 
coe Gor ee he 2 as ey 2s 
A ae ES se NS 
18.3 
18.8 Senge = 7 
9.31_| 
Fic. 6.—To accompany table VI 
nearly normal size while producing seed. There is little doubt 
regarding the absence of correlation between these characters, as 
the tables cover a number of years and the results all lead to the 
3 The shaaeares constant should exceed 3-4 times the probable error to have 
significanc 
