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[Presented to the American Medical Association in session at Cleveland, Ohio, June 7, 1883.]
[Continued from No. 4, Vol. II.]
The following tables present in a condensed form the amount of free and albuminoid ammonia in the atmosphere in the city of Chicago, at a station where the population is moderately dense, of good quality, with fairly good sewerage and water supply, as determind by Prof. Long for each day of the twelve months ending August 31, 1883:
These tabulated details giving the results of most careful daily examination of the atmosphere during an entire year in the same locality, and by uniform processes, develope several facts of value. First, they show that both free and albuminoid ammonia are constant elements of the atmosphere, at least in cities or densely populated localities, their presence in quantity capable of measurement having been found every day in the year. Second, that the