148 [ AssEMBLY 
from a source which infers hybridization. First, we will offer the 
results of our study with named seed, or presumably little hybridized 
seed, which justifies the following statements in regard to current 
hybridization. 
Proposition 1. Under the conditions of ordinary seed, maize 
does not in general show the effects of current cross-fertilization, 
the exception beng the sweet corns, which exhibit the influence of 
current foreign pollen very readily. 
Frint Corn. — Ten varieties in 1883; no kernels of other agricul- 
tural species; 7. e. all flint.. Nineteen varieties in 1884; all flint 
kernels, with a possible exception of an obscure dent by structure 
in Chinese Golden, Greg. 
Denr Corn. — Twelve varieties in 1883, all kernels dent; eleven 
varieties in 1884; all dent. 
Sorr Corn. — One variety in 1883, and some flint kernels; nine 
varieties in: 1884, and all soft kernels. 
Por Corn. — One variety in 1883, all pop kernels; five varieties 
in 1884, and all pop kernels. 
Swerr Corn. — Twenty-seven varieties in 1883, of these twenty- 
four had flint kernels, and three were ali sweet; in 1884, thirty- 
five varieties, of these one all sweet; five had dent kernels, and 
twenty-nine had flint kernels. 
We are therefore justified in the conclusion. 
The next question is as to what is the effect of hybridization upon 
the crop of the succeeding year. 
Proposition 2. Lhe agricuitural species of corn have a strong 
tendency to resist cross-fertilization with each other, the average 
resistance im our trials being 66 per cent success ; 34 per cent farl- 
ure. The full significance of this can only be seen by examining 
our evidence in detail. 
We note here at the beginning that certain varieties appear to 
resist hybridization very strongly. In 1882, seed of Waushakum 
corn was planted alongside many other varieties, and exposed to 
hybridization from many sorts. No influence of the foreign pollen 
was observed in the crop. The next year, or 1883, seed from this 
lant was used ona half acre, which in turn, was greatly exposed to 
hybridization from over one bundred sorts. No influence of the 
foreign pollen, either of 1882 or 1883 was observed. In 1884, the 
same condition of things, the seed from last year’s crop being used. 
The 1884 crop was as purely on type as the home bred seed, which 
has been carefully bred in Massachusetts for a number of years. 
Per contra, one plat of Waushakum corn was alongside the Minne- 
sota Dent in 1882. In 1883, seeds from both plats’ yielded a crop 
of corn, partly Minnesota Dent, and partly Waushakum Flint, there 
being no intermediates. ; 
