I9I2.] 



ANALYZED BY THE MENDELIAN METHOD. 



187 



Simplex X Simplex. 



Under this type of matings we have grouped those fraternities 

 coming from matings where neither parent can be classified as 

 normal, or called mentally deficient, but showing some mental or 

 nervous weakness. 



There were eighty-four matings of this type, with a total of 540 

 conceptions. 152 died in infancy, with 52 unclassified. Of the 336 

 others, 97 were epileptic and 17 feeble-minded, in other words, 114, 

 or 35 per cent., were nulliplex, an excess of 10 per cent, over the 

 expected 25 per cent. (Fig. 8.) 



In these matings there was an excess of epileptic and feeble- 



DiA](JO[fs^ig®^SMl)6^®Si] 



Fig. 8. In the central mating, the alcoholic, unchaste man who comes 

 from a " tainted " strain, married a migrainous woman. There were four 

 children : the first is normal, the second, criminalistic and has been an inmate 

 in the State Reform School, the third is an epileptic, and the last is neurotic. 

 This is an illustration of the simplex X simplex type of mating. E, epileptic; 

 F, feeble-minded; I, insane; A, alcoholic; T, tubercular; M, migrainous; A^, 

 normal. Case 2,029. 



minded beyond the expectations, which would seem to indicate that 

 some of these tainted conditions are more closely allied with the 

 cause of epilepsy and feeble-mindedness than has so far been recog- 

 nized. The fact that there were more than five times as many epi- 

 leptics as feeble-minded persons, tends to show that the neurotic 

 and otherwise tainted conditions are more closely allied with epi- 

 lepsy than with feeble-mindedness. It is a significant fact that out 

 of the 84 matings, in four of them both parents were migrainous, 

 while in 23 one parent was migrainous, and 14 of these were mated 



