Yellow milk has been mentioned in the Ephemerides and its cause ascribed to eating rhubarb.
It is a well-known fact that some cathartics administered to nursing mothers are taken from the breast by their infants, who, notwithstanding its indirect mode of administration, exhibit the effects of the original drug.

The same is the case with some poisons, and instances of lead-poisoning and arsenic-poisoning have been seen in children who have obtained the toxic substance in the mother's milk.
There is one singular case on record in which a child has been poisoned from the milk of its mother after she had been bitten by a serpent.
Paullini and the Ephemerides give instances of milk appearing in the perspiration, and there are numerous varieties of milk-metastasis recorded Dolaeus and Nuck mention the appearance of milk in the saliva.
Autenreith mentions metastasis of milk through an abdominal abscess to the thigh, and Balthazaar also mentions excretion of milk from the thigh.

Bourdon mentions milk from the thigh, labia, and vulva.

Klein speaks of the metastasis of the milk to the lochia.

Gardane speaks of metastasis to the lungs, and there is another case on record in which this phenomenon caused asphyxia.