250 Proceedings of Royal Society of Edinburgh. [june 6, 
albuminuria as the result of long and fatiguing work, nor from the 
use of a diet rich in albumen, nor from the free use of alcohol, 
but constantly showed it in large amount when exposed to mental 
excitement with depression. 
The remarks which I have made apply only to the ordinary forms 
of albumen and serum-albumen. With regard to the occurrence of 
peptones, we discovered them in only 3 out of the whole series 
of 771 specimens which were carefully examined in the course of 
the investigations. 
From the facts recorded, we seem entitled to conclude — 
1. That albuminuria is much more common among presumably 
healthy people than was formerly supposed, being demonstrable by 
delicate tests in nearly one-third of those examined. 
2. That there is no sufficient proof that albumen is normally 
discharged from the human kidneys. 
3. That the frequency of albuminuria increases as life advances, 
being rare in children and young adults, and common in men at or 
above sixty years of age. 
4. That it is more common among those whose occupations in- 
volve arduous bodily exercise than among those who have easy work. 
5. That albuminuria frequently follows the taking of food, 
especially of breakfast. 
6. That moderate muscular effort rather diminishes than increases 
albuminuria, except in rare cases. 
7. That violent or prolonged exertion often induces albuminuria. 
8. That cold bathing produces or increases it in some individuals. 
9. That the existence of albuminuria is not of itself a sufficient 
ground for the rejection of a proposal for life insurance. 
10. That the discharge of peptones from the kidneys is exceed- 
ingly rare in the presumably healthy. 
4. The Salinity and Temperature of the Moray Firth, and 
the Firths of Inverness, Cromarty, and Dornoch. By 
Hugh Bobert Mill, D.Sc., Scottish Marine Station. 
(Plate VIII.) 
The recently published results obtained by the German gun-boat 
“Drache” in the North Sea enabled a very good chart to be compiled 
