1949 - School Science-Health Textbook

This is a "How and Why Discoveries" Science Book from the Scientific Living Series used as grade school textbooks (estimating this at the 5th-6th grade levels) - Copyrighted 1940, 1947, & 1949 by L.W. Singer Company, Syracuse, New York - (estimate published 1949 based on illustrations)
Hardcover book / 384 pages / illustrated in black & white and color
** Chapters are related to Animals - Food/Energy/Growth, Wildlife Conservation, Birds & Water Life, Air/Water/Minerals, Earth in the Universe, Magnetic & Electrical Energy, Sound, Weather, Health & Medicines, and Science.