In a recent number of the Post-Graduate, we find the report of a discussion of the clinical values of urinalysis. In it are given the maturer views of Dr. C. L. Dana on that line of investigation in cases of neurasthenia. He has for many years made the routine examinations for sugar and albumen; but lately he has gone more explicitly into the relations of quantity, density and the amount of the phosphates.
A low specific gravity is found in nearly all cases of affection, and the proportion of the solids and of the urine was rather below the normal. But a dense urine may be found in one class of neurasthenics, namely, those who suffer from the lithæmic form.
This latter is generally acquired in consequence of overwork,indigestion and hepatic impairment. Then a dense urine, voided in large quantity, and containing considerable proportions of solids, chiefly urea and uric