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During urination and orgasm it opens up, and its diameter then varies from 0.5 to
0.8 centimetre (0.2 to 0.3 inch) along its length, but at other times its walls touch
and its lining is raised into longitudinal folds. The male urethra has three ...
This method is also used in the autumn, often, however, with a small (%-inch to 1-
inch [2-2%-centimetre]) fly. When the water temperature rises to 45° F (7° C) a
much smaller (%-inch to 1%-inch [one- to three-centimetre]), slimmer fly is used, ...
a speed of less than eight centimetres (about three inches) per minute, although
Haliotis has been reported to move at almost ten times that rate. Many
opisthobranchs employ monotaxic locomotion; some can glide on the underside
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review