40.3 MB (4.9 MB compressed)
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36.1 x 27.9 cm ⏐ 14.2 x 11.0 in (300dpi)
FRANCES EVELEGH / SCIENCE PHOTO LIBRARY FRANCES EVELEGH / SCIENCE PHOTO LIBRARY
Vitamins. Abstract photograph showing some foods which are rich in vitamins. Seen here are fish (Vitamins A and D), oranges (Vitamin C) and lettuce (Vitamin E). The importance of vitamins was first studied by Sir F. Gowland Hopkins at Trinity College, Cambridge. In a series of classic experiments, he showed that rats fed on a mixture of pure protein, carbohydrate, fats, salt and water didn't grow, but rats who had a small amount of milk added to the diet flourished. Hopkins deduced that the milk carried "accessory food factors" - now called vitamins.
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