This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
The ordinary method of collecting air samples is to employ two tonometer tubes with ground glass cocks, one of the tubes being filled with mercury. A fairly large tonometer will hold from 2 to 4 pounds of mercury, and the expense of an outfit for getting a number of samples, not to speak of its weight and bulk, is considerable. Another method is to make the collection in small bottles by the use of a mercury trough, which is also rather expensive, and involves some rather troublesome manipulations. Dr. Yandell Henderson suggested to me the use of acidulated water to replace the mercury in such a trough, and we found the results sufficiently accurate for our purposes. Since that time I have devised, and employed to a considerable extent, the small apparatus here described, as a very convenient means of collecting samples, and one which is well within the limits
Whitney JL. A PRACTICAL CONTAINER FOR AIR SAMPLES. JAMA. 1916;LXVI(14):1024-1025. doi:10.1001/jama.1916.25810400003015d