248 Proceedings of Royal Society of Edinburgh. [june 6, 
I have put in tabular form the facts elicited in this connection. 
Table V. — Showing effects of Exercise and of severe Exertion , also of Breakfast 
and Exercise. 
No. Examined. 
Before. 
After. 
Before. 
After. 
No. 
P.cent. 
No. 
P.cent 
March of 8 miles, 
63 
58 
18 
29 
11 
19 
Fatigue duty — 
coaling, 
36 
36 
16 
44 
23 
64 
Breakfast and 
Before] 
Ir’kfast 
After ’ 
3r’kfast 
\ 
After ! 
March. 
march, 
32 
32 
5 
15-6 
13 
40-6 
9 
28-1 
From the facts thus given it is shown that violent exertion may 
produce albuminuria, while moderate exercise tends rather in many 
cases to diminish it. Statements have been made as to the urine of 
the performers of pedestrian feats which confirm this experience. 
Weston’s urine is said to have contained both albumen and tubecasts 
at the end of one of his prolonged walks. 
A very interesting observation has been made by Dr W. A. 
Stirling, in a thesis sent in for the M.D. degree this year, and 
he has permitted me to make use of it on this occasion. He 
found in the course of an investigation as to the incidence of albu- 
minuria in 369 boys, who are being educated in the training-ship at 
Grays, Essex, that the boys who played wind instruments in the 
band exhibited albuminuria in a much larger proportion than the 
others. Thus, while, out of 64 boys so employed, 38, or 59 *4 per 
cent., had albuminuria, out of 305 boys, otherwise under like con- 
ditions, but not in the band, only 39, or 12 '8 per cent., showed the 
symptoms. 
These results may, as he remarks, be very naturally referred to 
altered blood pressure due to habitual use of musical instruments. 
With the view of testing this, I examined 24 boys who play 
wind instruments in the band of the Orphan Hospital, and 24 
boys in that Institution who are otherwise similarly placed, except 
in not being members of the band. It appears, so far as their 
numbers serve us for the purpose, that albuminuria is more fre- 
quent among the band boys than among the others, but that there 
is a diminution rather than increase at the end of an hour’s practice 
