Incomplete development of the ovaries.
Imperfect formation of ova, owing to marriage when still too young
(amenorrhœa).
Ovarian tumours and oophorectomy, whereby, however, a remnant of
_healthy_ ovarian tissue is spared.
Chronic oophoritis and perioophoritis; syphilitic disease of the
ovaries.
Excessive obesity, anæmia, chlorosis, scrofula, morphinism,
alcoholism, various conditions affecting unfavourably the
innervation or nutrition of the ovary; change of climate or mode of
life; emotional disturbance; inbreeding, hereditary predisposition.
II. STERILITY DUE TO INTERFERENCE WITH THE CONTACT OF NORMAL
SPERMATOZOON AND OVUM.
_A. On the Part of the Wife._