"Searchlights on Health: The Science of Eugenics" by B. G. Jefferis and J. L. Nichols explores the intersection of sexual health, hygiene, and responsible reproduction. This volume delves into the science of eugenics, offering insights into marriage, dating, and sexual ethics as understood at the time of its original publication. Examining topics relevant to family relationships and societal well-being, "Searchlights on Health" offers a detailed look at human anatomy and physiology within the context of early 20th-century social science. It is a valuable resource for those interested in the history of eugenics and its impact on discussions surrounding sexual health and ethical considerations. This meticulously prepared print edition provides a clear and accessible presentation of the original text.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.