The Popular Science Monthly: October, 1893 is a collection of scientific articles and essays compiled by William Jay Youmans. The book contains a variety of topics, including the evolution of the human brain, the history of electricity, and the psychology of music. The articles are written by various authors and cover a range of scientific disciplines, such as biology, physics, and psychology. The book provides a glimpse into the scientific knowledge and thinking of the late 19th century, and is a valuable resource for anyone interested in the history of science.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.