1910-11.] Relative Positions of certain Biological Types. 77 
Thus, from the values of r in Table VI. and those of the various 
measurements of Table I., we deduce as the first two terms of such a 
formula — 
ij 0-9777 x m i ~ 48 ' 5 + °'9356 x ”V~ 34 . ~? + etc. 
n { 5o*5 25*6 J 
or 
A | 0 , 01730(m 1 - 48*5) + 0'03655(m 2 - 34-2) + etc. j> , 
where n is the total sum of the various coefficients of correlation involved, 
m 1 the observed length of the calvarial height in mm., m 2 the calvarial 
height index, and so on. The numerical value given by this formula 
would then only have to be directly compared with the numbers giving 
the composite relative positions of the types already included in the table, 
in order to place the cranium, or group of crania, between its nearest 
neighbours on either side, and at its proper relative distance from each. 
