148 
aeration while the bathers are stirring it up, but because of the con- 
stant contamination at such times, this aeration cannot be counted upon 
as very much of a purifying factor. During the times when the pool 
is not being used. when the water is stagnant, no purification is tak- 
ing place. On the contrary, bacteriological tests have shown that there 
is an increase in the bacterial content, particularly if the water has been 
warmed up to a temperature of 75 degrees Fahr. or over. There is con- 
siderable sedimentation during such times, but if this sediment remains 
in the bottom of the pool to be stirred up when the bathers next use the 
water, this cannot be looked upon as purification. 
The cold plunge at the Fleischmann baths, New York City’ has ‘“‘enor- 
mous windows of plate glass facing south and the medicine of the sun 
apd the glory of the sky.” (Fig. 6.) Comparing this elegant sunny 
pool room with the condition in our average basement swimming pools, 
Fig. 3. Women’s Swimming Baths. Leeds, England. (Direct sunlight rarely reaches 
water.) By courtesy of “Modern Sanitation.” 
it makes the latter look dark and gloomy. The pool room at the Purdue 
gymnasium is on the south side of the building, and the windows are large 
for a basement room, and yet even this does not get the necessary sun- 
light for purposes of purification of the water. 
At the swimming baths at Leeds, England (Cookridge street), the sky- 
light is used for lighting the rooms, but even here the effect is none too bril- 
liant. (Figs. 3 and 4.) 
1Luey Cleveland, Modern Sanitation, Jan., 1908. 
Henry Gray, Modern Sanitation, Oct.. 1900. 
