Vitamins

1906

Vitamins

The book of science

Tom Sharp

Frederick Gowland Hopkins food science

Vitamins

Limeys

Essentials

Frederick Hopkins conducted a series of experiments feeding rats to prove scientifically that factors exist in foods aside from the known and measurable constituents of the foods that rats can not produce themselves but that are necessary for their health.

See also in The book of science:

Readings on wikipedia: