Today in Science History

From Today in Science History:

Katherine Esau (Died 4 June 1997; born 3 Apr 1898). Russian-born American botanist who did groundbreaking work in the structure and workings of plants. She is best known for her research into the effects of viruses upon plant tissues, and her studies of plant tissue structures and physiology. Her research into plant viruses focused on how viruses effect the structure and development of a plant’s phloem (its food-conducting tissue). This research enabled her to distinguish between primary and secondary viral symptoms, allowing studies of viral damage to specific plant tissues to be conducted. In addition, she clarified the development phases of plant tissues, particularly the sieve tubes which serve to move solutes throughout a plant. Her definitive work Plant Anatomy (1953, rev.1965) is a classic.

William Beebe (Died 4 June 1962; born 29 July 1877). (Charles) William Beebe was an American biologist, explorer, and writer on natural history who combined careful biological research with a rare literary skill. As director of tropical research for the New York Zoological Society from 1919, he led scientific expeditions to many parts of the world. He was the coinventor of the bathysphere, a spherical diving-vessel for use in underwater observations. In 1934, with Otis Barton, he descended in his bathysphere to a then record depth of 3,028 feet (923 metres) in Bermuda waters on 15 Aug 1934. Later dives reached depths of around 1.5 km (nearly 1 mile).

The Remarkable Life of William Beebe: Explorer and Naturalist, by Carol Grant Gould.

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