A small boy was lost, so he went up to a policeman and said, "I've lost my dad!"
The policeman said, "What's he like?"
The little boy replied, "Chips and beer."
Katherine EsauBorn 3 Apr 1898; died 4 Jun 1997 at age 99.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. |
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