[123] This is an instinctive impulse under all strong emotion in primitive persons. "The Australian Dieri," says A.W. Howitt (_Journal Anthropological Institute_, August, 1890), "when in pain or grief cry out for their father or mother." [124] Vaschide and Vurpas, _Archives de Neurologie_, May, 1904. [125] F.B. Robinson, _New York Medical Journal_, March 11, 1893. [126] Féré deals fully with the various morbid results which may follow coitus, _L' Instinct Sexuel_, Chapter X; id., _Pathologie des Emotions_, p. 99. [127] With regard to the relationship of detumescence to the blood-pressure Haig remarks: "I think that as the sexual act produces low and falling blood-pressure, it will of necessity relieve conditions which are due to high and rising blood-pressure, such, for instance, as mental depression and bad temper; and, unless my observation deceives me, we have here a connection between conditions of high blood-pressure, with mental and bodily depression, and the act of masturbation, for this act will relieve those conditions, and will tend to be practiced for this purpose." (A. Haig, _Uric Acid_, sixth edition, p. 154.) [128] A medical correspondent speaks of subjective feelings of temperature coming over the body from 20 to 24 hours after congress, and marked by sensations of cooling of body and glow of cheeks. In another case, though lassitude appears on the second day after congress, the first day after is marked by a notable increase in mental and physical activity. III. The Constituents of Semen--Function of the Prostate--The Properties of Semen--Aphrodisiacs--Alcohol, Opium, etc.--Anaphrodisiacs--The Stimulant Influence of Semen in Coitus--The Internal Effects of Testicular Secretions--The Influence of Ovarian Secretion. The germ cell never comes into the sphere of consciousness and cannot therefore concern us in the psychological study of the phenomena of the sexual instinct. But it is otherwise with the sperm cell, and the seminal fluid has a relationship, both direct and indirect, to psychic phenomena which it is now necessary to discuss.