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FREDERICK W. SCHLUTZ, M.D.; M. MORSE, M.S.

Am J Dis Child. 1925;30(2):199-209.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

As a preliminary step in the investigation of the relationship between cod liver oil and ultraviolet radiation as antirachitic factors, the experiments of Kugelmass and McQuarrie¹ on the photoactivity of cod liver oil were repeated. In every case negative results were obtained.

METHOD

An apparatus similar to that described by these investigators was employed. Eastman's Speedway plates, possessing properties similar to Seed's Graflex 60, were used. Since these plates proved to be sensitive to the red light in the room, the whole experiment was carried out in total darkness. The cod liver oil was a sample of Mead and Johnson's, guaranteed as to vitamin activity. One sample was exposed after air had bubbled through it for about two minutes. In another sample, the apparatus was so arranged that a slow stream of dry oxygen was passed continuously over the surface of the oil during the exposure.

Under these conditions, . . . [Full Text PDF of this Article]

Author Affiliations
MINNEAPOLIS

From the Department of Pediatrics, University of Minnesota.

Footnotes
Received for publication, May 13, 1925.

Read before the American Pediatric Society, Washington, D. C., May, 1925.

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