"Scientific Monthly, October-December 1915" is a publication that contains a number of interesting articles from various fields of science. In this issue, the most relevant researches of that time, which relate to physics, chemistry, biology and other scientific disciplines, are collected. The authors of the articles are scientists from different countries, which makes this publication truly international. "Scientific Monthly, October-December 1915" is an excellent source of knowledge for anyone interested in the scientific discoveries of that period.