An example of analogy and simile in writing about science:
"Lastly, the labellum is furnished with two prominent ridges… sloping down to the middle and expanding outwards like the mouth of a decoy; these ridges perfectly serve to guide any flexible body, like a fine bristle or hair, into the minute and rounded orifice of the nectary, which, small as it is, is partly choked up by the rostellum. This contrivance of the guiding ridges may be compared to the little instrument sometimes used for guiding a thread into the fine eye of a needle."
Charles Darwin (writing about Orchis pyramidalis)
Darwin, C. (1862). On the Various Contrivances by which British and Foreign Orchids are Fertilised by Insects, and on the Good Effects of Intercrossing. John Murray.
The simile is only likely to be clear to someone with experience of hunting wild ducks!
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