RARE "Vitamin E" Herbert Evans Signed 3X5.5 Card Dated 1960 For Sale
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RARE "Vitamin E" Herbert Evans Signed 3X5.5 Card Dated 1960:
$199.99
Up for sale a RARE! "Vitamin E" Herbert Evans Signed 3X5.5 Card Dated 1960.
1882 – March 6, 1971) was an American anatomist and embryologist best
known for co-discovering Vitamin E. He was born in Modesto, California. In
1908, he obtained his medical degree from Johns Hopkins University. Evans
became associate professor of anatomy at Johns Hopkins University. Evans moved
back to California in 1915 and was made professor of anatomy at the University of California,
Berkeley, and held that position until his death. His medical
research at Berkeley addressed problems relating to and histology. In
1918, his research into the number of human chromosomes led him to believe the number to be 48, when
most people assumed the number to be much higher. It was only later discovered
that the correct figure was 46. Evans had much greater success however
with hormones extracted from the anterior lobe of the pituitary gland. He isolated Human Growth Hormone,
which is essential for human growth and development. In 1922 along with Katharine Scott Bishop, during feeding experiments on rats, he
co-discovered Vitamin E which is needed for human
reproduction. Evans became director of the Institute of
Experimental Biology at Berkeley in 1931. With Gladys Anderson Emerson,
he reported the isolation of the pure Vitamin E from wheat germ in 1937. He also determined the formula C29H50O2. Evans was also instrumental in
developing reproductive systems research
with Miriam Elizabeth Simpson and Choh Hao Li, by studying the oestrus cycle of rats.
Evans is also credited with developing Evans blue, a method which determines blood volume
in humans and animals. Evans took a strong interest in the history of science
and was an active collector of rare books in the field. His collection was
later acquired by the Harry Ransom Center at
the University of Texas at
Austin. He died in Berkeley, California, aged
88.
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