ICO NATURAL INHERITANCE. [chap. 



are Artistic. Therefore no person whose Grade in the 

 Art-Scheme does not exceed 70° can be reckoned as 

 Artistic. Referring to Table 8 we see that the value 

 of D for the Grade of 70° is + 078 ; consequently the 

 art-measure of an Artistic person, when reckoned in 

 units of the accepted scale, must exceed P + 078. 



The average art-measure of all persons whose Grade 

 is higher than 70°, may be obtained with sufficient 

 approximation by taking the average of all the values 

 given in Table 8, for every Grade, or more simply 

 for every odd Grade from 71° to 99° inclusive. It 

 will be found to be 171. Therefore an artistic 

 person has, on the average, an art-measure of 

 P + 171. We will consider persons of this measure 

 to be representatives of the whole of the artistic por- 

 tion of the Population. It is not strictly correct to 

 do so, but for approximative purposes this rough and 

 ready method will suffice, instead of the tedious process 

 of making a separate calculation for each Grade. 



The M of the Co-Fraternity born of a group of 

 Mid-Parents whose measure is P + 1*71 will be 

 P + (| x 171) or (P + 1-4). We will call this value 

 C. The Q of this or any other Co-Fraternity may be 

 expected to bear approximately the same ratio to the 

 Q of the general population, that it did in the case 

 of Stature, namely, that of 1*5 to 17. Therefore the 

 Q of the Co-Fraternity who are born of Mid-Parents 

 whose Art-measure is C, will be 0'88. 



The artistic members of this Co-Fraternity will be those 

 whose measures exceed {P + 078}. We may write this 



