Background
Riddle was born in Cincinnati, Indiana to Jonathan Riddle, Junior. and Amanda Emeline Carmichael Riddle where he was raised with his eight siblings.
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book
The unleashing of evolutionary thought
(Excerpt from The Unleashing of Evolutionary Thought Such...)
Excerpt from The Unleashing of Evolutionary Thought Such a venture necessarily becomes at first a closer look at meaningful parts of the new revelation of science, with the intent of finding its full meaning. It next becomes a tour of the several areas - schools, news sources, churches, theaters, ordinance and law - where that meaning struggles against an entrenched and resolute opponent for a beachhead in institutions that re ect man's social goals and his thoughts about himself. This leash on thought is short and stout. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."
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The Unleashing of Evolutionary Thought
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Oscar Riddle
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Education
He received a Bachelor of Surgery in biology from Indiana University in 1902 and a Doctor of Philosophy in zoology at the University of Chicago in 1907.
Career
He is known for his research into the pituitary gland and for isolating the hormone prolactin. He taught physiology and biology in Saint Louis, Missouri and Puerto Rico. Intent on becoming an ichthyologist, Riddle embarked on natural history expeditions to the Orinoco River in South America and Cuba.
He served in the New York National Guard from 1916 to 1918 and the United States Army from 1918 to 1920, where he was stationed in Dijoux and Bordeaux, France.
In his time, Riddle was one of the top biologists in the United States. His research spanned endocrinology, the physiology of reproduction, animal pigmentation, and the nature and functional basis of sexual
He is most remembered for his research into the major pituitary hormone prolactin. Riddle discovered that prolactin injections inhibited gonad growth in males and produced maternal behavior in females.
His research demonstrated that prolactin and other hormones of the frontal lobe are disintegrated by the enzyme trypsin.
His work also showed that growth is a synergistic response to the hormones prolactin and thyrotropin. He earned a degree in law in 1933 and was featured on the cover of TIME in January 1939. Riddle retired in 1945.
He garnered national attention for a speech debunking superstition in 1936.
His speech was delivered to the American Association for the Advancement of Science and was published in the journal Science and covered by the New York Times. In 1958, Riddle was named the Humanist of the Year by the American Humanist Association.
He was president of the American Rationalist Federation in 1959 and 1960. They had no children.
He died of prostate cancer at the age of 91 in Plant City, Florida in 1968.
Works
book
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The unleashing of evolutionary thought
(Excerpt from The Unleashing of Evolutionary Thought Such...)
- Endocrines and Constitution in Doves and Pigeons (Carnegie Institution of Washington Publication 572)
- The Unleashing of Evolutionary Thought
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The unleashing of evolutionary thought
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Born
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Died
1968 (aged 81)