Sept. 15. 191S Resemblance of Parents and Offspring of Sheep 



483 



TABLES FOR DAMS AND OFFSPRING 



Table 11(A) shows the frequencies with which recorded offspring born 

 in states 1,2, and 3 have dams born in these states, or the frequencies 

 with which dams born in states i, 2, or 3 beget recorded offspring in 

 states I, 2, or 3. 



Table 1 1(A). — Correlation between size of litter in which offspring are born and size of 

 litter in which dams are born 



r^o. 0869 + 0.0065. 

 Means of arrays of offspring: 



(i) Wlien dams are singles i. 3585 ±0. 0043. 



(2) When dams arc twins i. 4412 ±0. 0051. 



(3) When dams are triplets i. 538 ±0. 034. 



Table 11 (B) simply converts into the form of percentages the fre- 

 quencies given in Table 11(A), so that the essential points of interest 

 may be grasped more easily. From means of arrays of offspring in 

 Table 11(A), we note that there is a significant tendency for twin dams 

 to produce a larger percentage of twins than is produced by single dams. 

 The correlation is given by 



r = 0.0869 i 0.0065. 



Table 11(B). — Percentages of offspring born in states i, 2, and j to correspond to states 



J, 2, and J of the dams 



ANALYSIS OF DATA FOR DAMS, MATERNAL GRANDPARENTS, AND 



OFFSPRING 



Table III(A) represents the distribution of offspring, dams, and 

 maternal granddams with respect to states 1,2, and 3. To illustrate the 

 meaning of the table, consider the number 1,393 ^^ the column headed 

 I and in the row marked 1-2. This means that there are 1,393 of the 



