ix.] THE ARTISTIC FACULTY. 161 



value in the form of {(P + 1'4)-0'36}, or {C - 0'36}. 

 Table 8 shows that the Deviation of 0'36 is found 

 at the Grade of 40. Consequently 40 per cent, of 

 this Co-Fraternity will be Non- Artistic and 60 per cent, 

 will be Artistic. Observation Table 23 shows the 

 numbers to be 36 and 64, which is a very happy 

 agreement. 



Next as regards the Non-Artistic Parents. The Non- 

 Artistic portion of the Population occupy the 70 first 

 Grades in the Art-Scheme, and may be divided into 

 two groups ; one consisting of 40 Grades, and standing 

 between the Grades of 70 and 30, or between the 

 Grade of 50 and 20 Grades on either side of it, the 

 average Art-measure of whom is P ; the other group 

 standing below 30, whose average measure maybe taken 

 to be P 1*71, for the same reason that the group 

 above 70 was taken as P + 171. Consequently the 

 average measure of the entire Non-Artistic class is 

 T V{(40 x P) + 30 (P - 171)} 

 = P - f x 171 = P - 073. 



Supposing Mid-Parents of this measure, to represent the 

 entire Non- Artistic group, their offspring will be a Co- 

 Fraternity having for their M the value of P { x 073} 

 or P 0*49, which we will call C', and for their Q the 

 value of 0*88 as before. 



Such among them as exceed {P -- 078}, which we 

 may write in the form of {(P 0*49) + (1'27)}, or 

 {C' + 1*27}, are Artistic, and they are those who, 

 according to Table 8, rank higher than the Grade 83. 

 In other words, 83 per cent, of the children of Non- 



M 



