Up for auction a RARE! "Vitamin E" Herbert Evans Signed 3X5.5 Card Dated 1960. 

ES-7265E

Herbert

McLean Evans (September 23,

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 human nutrition, endocrinology, embryology, 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.