vii.] DISCUSSION OF THE DATA OF STATURE. 91 



The only drawback to the use of Stature in statistical 

 inquiries, is its small variability, one half of the popula- 

 tion differing less than 17 inch from the average of all 

 of them. In other words, its Q is only 1 '7 inch. 



Description of the Tables of Stature. I have arranged 

 and discussed my materials in a great variety of ways, to 

 guard against rash conclusions, but do not think it 

 necessary to trouble the reader with more than a few 

 Tables, which afford sufficient material to determine 

 the more important constants in the formulae that will 

 be used. 



Table 11, E.F.F., refers to the relation between the 

 Mid-Parent and his (or should we say its ?} Sons and 

 Transmuted Daughters, and it records the Statures of 

 928 adult offspring of 205 Mid-Parents. It shows the 

 distribution of Stature among the Sons of each succes- 

 sive group of Mid-Parents, in which the latter are all 

 of the same Stature, reckoning to the nearest inch. I 

 have calculated the M of each line, chiefly by drawing 

 Schemes from the entries in it. Their values are printed 

 at the ends of the lines and they form the right-hand 

 column of the Table. 



Tables 12 and 13 refer to the relation between Brothers. 

 The one is derived from the E.F.F. and the other from 

 the Special data. They both deal with small or moder- 

 ately sized Fraternities, excluding the larger ones for 

 reasons that will be explained directly, but the R.F.F. 

 Table is the least restricted in this respect, as it only 

 excludes families of 6 brothers and upwards. The data 



