The Ephemerides speaks of black urine being a precursor of death, but Piso, Rhodius, and Schenck say it is anomalous and seldom a sign of death.

White urine, commonly known as chyluria, is frequently seen, and sometimes results from purulent cystitis.

Though containing sediment, the urine looks as if full of milk.

A case of this kind was seen in 1895 at the Jefferson Medical College Hospital, Philadelphia, in which the chyluria was due to a communication between the bladder and the thoracic duct.
Ackerman has spoken of metastasis of the tears, and Dixon gives an instance in which crying was not attended by the visible shedding of tears.

Salomon reports a case of congenital deficiency of tears.
Blood-stained tears were frequently mentioned by the older writers.
Recently Cross has written an article on this subject, and its analogy is seen in the next chapter under hemorrhages from the eyes through the lacrimal duct.
The Semen .-- The older writers spoke of metastasis of the seminal flow, the issue being by the skin (perspiration) and other routes.