Phenylhydrazin test: Positive; the glycosazon-crystals have melting-point 110° cent., therefore do not result from sugar.

Optical rotation: 0.2 per cent. lævo-rotatory.

Reducing substances: 0.32 per cent.

Nitrogen: 21.9 grammes (Correction: 1 gramme).

Nitrogen as albumen: 136.8 grammes.

The woman was kept in this condition four weeks. In the meantime menstruation took place. It lasted four days, during which time no change appeared in the analysis. An analysis was made every week. Another menstruation occurred, lasting four days, and impregnation took place six days later. After this the menses ceased. As I mentioned above, the sex of the embryo is already determined in the third month of pregnancy, for which reason I kept the patient under dietary influence up to that time. In the interim I made ten analyses at short intervals, the average results of which I shall now give.

Average of Ten Analyses.

Reaction: Acid.

Specific gravity: 1028-1032.

Quantity in 24 hours: 750 cubic centimetres, to 1200.