It is sometimes annoying to nervous persons because of the frequent micturition it makes necessary.

I have discovered that while skimmed milk alone is being taken, uric acid usually disappears almost entirely from the urine, so that it is difficult to discover even a trace of this substance; nor does it seem to return so long as nothing but creamless milk is used.

Almost any large addition of other food, but especially of meat, enables us to find it again.

Creatine and creatinine also seem to lessen in amount, but of the extent of this change I am not as yet fully informed.
A yet more singular alteration occurs as to the pigments.

If after a fortnight or less of exclusive milk diet we fill with the urine a long test-tube, and, placing it beside a similar tube of the ordinary urine of an adult, look down into the two tubes, we shall observe that the milk urine has a singular greenish tint, which once seen cannot again be mistaken.