80.8
Ohio--Jones, Pa. 17.2 22.9 28.2 74 84.5
Ohio--Baum, Pa. 15.0 24.9 29.3 81 87.5
Ohio--Worton, Md. 14.6 22.4 28.7 66 80.3
Average 16.1 22.9 28.5 71.5 83.3
------------------------------------------------------------------------

Table 4 gives the results of tests of similar samples of three varieties
from four different sources by three different operators. The tests are
not satisfactory because pretreatment was not uniform and there is
insufficient data on penalties which are omitted. Some samples of the
varieties Ten Eyck and Thomas contained empty nuts and shrivelled
kernels which would preclude equal scores. The variety Ohio was
uniformly filled from all sources. In the variety Ten Eyck there is a
difference of 10.5 per cent in total per cent kernel in samples from the
Baum orchard. This was related to 6 empty nuts in the sample cracked by
operator 3. In the variety Ohio in which the kernels were plump the
greatest variation between duplicate samples in total per cent kernel is
3 or only about 10 per cent of average total per cent kernel.

An examination of these data show the following points of interest: (1)
that the duplicate samples showed considerable variation in weight of
single nut and total per cent kernel, characters not dependent on
personal skill or judgment. Operator 2 did not crack the whole sample of
25 and may have selected the larger nuts, thus securing a greater weight
per nut with all varieties. The superior filling of the nuts of Ohio
appears to be related to the fact that in the orchards in question this
variety was observed to hold its leaves longer than the others which
lost their leaves in late summer before harvest by leaf blight. Shrunken
kernels are a logical result of early defoliation.

In the per cent of kernel obtained in first crack operator 1 recovered a
higher per cent than operator 3 in all of the eleven possible
comparisons and higher than operator 2 in 9 out of 12 possible
comparisons. This probably is the result of soaking the samples by
operator 1 and not by the others or possibly due to greater skill or
care in cracking. The number of quarters recovered by operator 1 is
greater in all cases than that obtained by either operator 2 or 3. This
is also a result of soaking or skill or both. The score of operator 1
was in all tests of du