The question of inheritance of similar mental traits is, of course, important. We have found absolutely no proof of the trait of pathological lying, as such, being inherited. The reader will note with interest particularly the facts in Cases 2 and 4, where we at first thought we had to deal with inheritance, but later found there was no blood relationship between the supposed parent and child. In those instances the lying of the younger individual was much more likely to be the result of psychic contagion, and this also may be largely the explanation of Cases 6 and 8, where an older relative was well known to be a prevaricator. The bad inheritance in these cases then turns out to be, corroborating what we found in studying the general problem of criminality,[25] a matter of coming from stock that shows defects in various ways-all making, however, in the offspring for moral instability. [25]``Inheritance as a Factor in Criminality. A Study of a Thousand Cases of Young Repeated Offenders.'' Edith R. Spaulding and William Healy. pp. 24. Bulletin of the American Academy of Medicine, Vol. XV. February 1914. Developmental Physical Conditions. Inquiry into our 19 mentally normal cases gave the following findings: Antenatal conditions were defective in 2 cases on account of syphilis and in one case from advanced age of the mother. The accident during pregnancy to the mother in one case, the severe mental shock in another, and the effect of illegitimacy in still another we can not evaluate. In 2 cases there were operative births with, however, no bad results known. One was a twin. Early severe disease of the nervous system was experienced by one, and convulsions during infancy by two others. Another suffered from some unknown very severe early illness, and one from prolonged digestive disturbance in infancy. Three had in early childhood several severe illnesses, one had a long attack of ``chorea.'' Two suffered from general nervousness, incited in one case by the excessive use of tea and in the other by a similar use of coffee. One was an habitual masturbator from childhood. Difficult menstruation was reported in only one case. In 5 cases there was a quite normal early developmental period, according to reliable accounts. In 3 cases the early developmental histories are completely unknown, and in 3 others uncertain. The data of developmental history in the border-line types may be easily noted in the case histories.