Reference numberLBO/25/49
Alternative reference numberLBO/25/148
TitleCopy of part of a letter from John Bertram, Pensilvania [Pennsylvania], to Peter Collinson
Date26 April 1737
Description ' Concerning a periodical Appearance and Progress of a certain Species of Caterpillars, and uncommon Number of Bears, and their Migration of vast Flocks of Pigeons : with some Remarks and Inferences. '

Read to the Royal Society on 8 February 1738
Access statusOpen
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    Browse the records of some of our collections, which cover all branches of science and date from the 12th century onwards. These include the published works of Fellows of the Royal Society, personal papers of eminent scientists, letters and manuscripts sent to the Society or presented at meetings, and administrative records documenting the Society's activities since our foundation in 1660.

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