ROSTAND (Jean), écrivain et biologiste (1894-1977).

Lot 178
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Estimation :
300 - 400 EUR
ROSTAND (Jean), écrivain et biologiste (1894-1977).
2 documents. Typescript signed with many autograph corrections, without place nor date, 10 p. in-4° entitled La bisexualité originelle de l'être: " The problem of the differentiation of the sexes is one of those which solicited the ingenuity of the biologists most strongly... it still comprises many unknowns.... At least one notion is emerging.... That of the bisexuality of being... The sex of the individual appears to us as the result of a kind of conflict between two opposing tendencies, one of which ends up prevailing... "Then he studies the changes of sex, the hermaphrodites. Typescript signed with autograph corrections, 9 p. in-4° entitled Les hommes qui ont le coeur à droite: " l'inversion positionnelle du coeur entraîne tout naturellement l'inversion fonctionnelle... All the other organs are reversed... ».
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