Credit: ©The Royal Society
    Image number: RS.15557

    How to draw birch sap

    Date
    1669
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    Manuscript page number
    p7
    Material
    Dimensions
    height (page): 292mm
    width (page): 192mm
    Subject
    Description
    A diagram showing how to insert a hollow pipe diagonally near the lower joint of the branch of a birch tree (ab indicates the upright trunk of the tree) in order to collect the sap. From a letter by John Beale, who also had an interest in orchards and cider-making.

    Copies at LBO/27/297 and LBC/27/297.
    Transcription
    How to dray[n] birch-water to the best advantage in greatest plenty from the body and branches of the Tree. e. is the upright body of the birch it is an arm or branch growing out of its side; d is the end of a faucet or other hollow pipe inserted into the orifice of an augur-hole, made through an arm or body of the tree from c to f, the larger the 'e' is made, the more plenty of sap is expected.
    Transcribed by the Making Visible project
    Related fellows
    John Beale (1608 - 1687, British) , Clergyman
    Associated place
    <The World>
       > Europe
          > United Kingdom
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