1938 年 4 巻 7 号 p. 297-300
The author measured the strength of the photoelectric effect of the citrated human blood. The photoelectric effect of the citrated blood of the patients with pulmonary tuberculosis is far weaker than that of the citrated blood of healthy persons when the comparison is taken using the light longer than 2500A. It is considerable that the quantity of albumin in blood may cause the inequality of the strength of the photoelectric effect. This reasoning is proved by the fact that the inequality is not distinct if the wave length of the light source is not restricted, because albumin is the only photoelectrically active substance by long visible rays among the ingredients of blood. The cordial thanks of the author are due to Prof. Toshikazu Mashimo, M. D. and Assist. Prof. Magoziro Maekawa, M. D. for their kind guidance.