104 Nebraska Agricultural Exp . Station , Research Bui. 20 
remnant of the high yielding ear in an isolation plat and there- 
after always growing it isolated from other corn to avoid “con- 
tamination.” The remnant of a single high yielding ear (No. 
64) of the Class II ear-to-row tests made in 1906 and 1907 fur- 
nishes the basis for this study. In 1907, strain No. 64 yielded 
81.2 bushels per acre as compared with 64.4 bushels for the 
original Hogue’s Yellow Dent. In 1908 the one-third remnant 
of the original ear was grown isolated from other corn. The 
seed stock has been continued since by shelling together a large 
number of the better developed ears and growing in an isolation 
plat. Similarly selected seed was used in the comparative yield 
tests reported in Table 40. 
(3) Mixing several productive ear-to-row strains and in- 
creasing thereafter in a single isolation plat without further 
selection except the choice of well-developed seed ears. This 
seed stock originated in four productive “Class II” ear-to-row 
strains. In the initial tests in 1906 and 1907 these four ears 
Fig. 24. — Harvesting ear-to-row breeding plats. The corn from the 
various rows is weighed separately and placed in piles at the end 
of the field for study of ear type and quality. Special samples are 
saved for making shrinkage and shelling determinations. The flat- 
boat has three compartments on each side, and permits husking six 
rows at each round by three buskers. 
