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Frozen materials viewed by English microscopist Robert Hooke, 1665. Observations of several kinds of frozen figures showing frozen urine (1), snowflakes (2) and ice flakes (4, 5, 6)
Hookes observations of the cellular structure of cork and a sprig of Sensitive Plant, 1665Hookes observations of the cellular structure of cork and a sprig of Sensible (Sensitive) Plant, 1665. Hooke was the first to use the word cell to describe the honeycomb nature of cork
Hookes microscope with condenser for concentrating light, 1665. From left to right above are his barometer, refractometer for measuring refractive power of liquids, and lens-grinding machine
Illustrations from English microscopist Robert Hookes Micrographia, 1665. 1: underside of a stinging nettle leaf; 2: beard of wild oat used in Hookes hygrometer; 3: section of head of wild oat; 4
Flea, wingless bloodsucking parasitic insect, 1665. The human flea (Pulex irritans) can transmit plague. From Micrographia by Robert Hooke (1635-1703)
Louse clinging to a human hair, 1665Human Louse, a wingless parasitic insect, 1665. The human louse, a wingless parasitic insect, is now known to be a vector for epidemics of typhus. From Micrographia by Robert Hooke (1635-1703)
Louse clinging to a human hair in Hookes Micrographia, 1665. Robert Hooke was born on the Isle of Wight, and studied at Oxford University