The book "Ohio Journal of Science. Volume XVI., Issue 2 (December 1915)" is a collection of scientific articles devoted to the study of various aspects of science and research. This issue contains articles from various authors on topics from the natural sciences and humanities. Readers will be able to get acquainted with the latest discoveries and novelties in the world of science and research, which makes this book an important source of information for scientists, students and anyone interested in international achievements in the field of science. "Ohio Science Journal" offers readers a wide range of topics that stimulate intellectual development and contribute to the deepening of knowledge in various fields of science.