Word: filtering
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Dates: during 1910-1919
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When the battle is hottest and the wounded begin to filter back through the lines, some of them--hit by a shell or shot through an arm or shoulder--are able to stumble back alone toward the dressing stations between the lines...
This reciprocal influence we often lack at Harvard. Men in higher courses are likely to receive it, but it does not filter down to the ordinary undergraduate. The advisor system has usually failed to provide it. Other colleges have tried the plan of holding departmental smokers where the teachers can talk informally with their students and where the flow of ideas is unrestricted. This, of course, offers only an opening, which he must follow...
Concerning bacteria in the water, proper precaution would be assured by the filter and artesian well system, with the use of copper sulphate. The copper sulphate is a small item, as about four pounds in solution in the pool would suffice. The situation of the pool and its lack of sunlight would not affect the presence of bacteria materially...