The effect of humidity on nervousness and on general efficiency This book, "The effect of humidity on nervousness and on general efficiency", by Lorle Ida Stecher, is a replication of a book originally published before 1916. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.