ICO NATURAL INHERITANCE. [CHAI-. 



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 -f 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 l'7i. Therefore an artistic 

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

 P + l'7l. 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 -I- 171 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 



