PRODUCTION AND COLLECTION OF SEED OYSTERS 
255 
In order to study the distribution of spat in the crates the shells in each crate were 
divided into three layers — top, middle, and bottom — and counts were made as to the 
number per shell and the distance each shell was located from the center of the 
container. The plan used in counting the shells is shown in Figure 35, together with 
the distribution of spat that was found in three crates planted in Group I. The 
spat were found to be most abundant on the shells in the corners of the crates while 
within a radius of 6 inches from the center or from the sides the setting was very light 
and unsatisfactory. To show this distribution and the typical variation in the num- 
1NCHES FROM GENTLE OF CRATE. 
Figure 35.— Method of counting and distribution of set in crates. The figures are the averages 
of three crates in Group 1 
her of spat attached per shell, the following record is given for a representative crate 
taken from Group I. (Table 29.) 
Table 29. — Distribution of spat in a crate 
