Identifier: vegetablestatick00hale (find matches)
Title: Vegetable staticks, or, An account of some statical experiments on the sap in vegetables : being an essay towards a natural history of vegetation : Also, a specimen of an attempt to analyse the air, by a great variety of chymio-statical experiments, which were read at several meetings before the Royal Society
Year: 1727 (1720s)
Authors: Hales, Stephen, 1677-1761 Gribelin, Simon, 1661 or 2-1733, engraver Royal Society (Great Britain) Burndy Library, donor. DSI
Subjects: Plant physiology Air
Publisher: London : Printed for W. and J. Innys ... and T. Woodward ...
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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the tubes, Iwill firft defcribe the manner of cement-ing on the brafs-collar b> to the ftem of theVine in which I have been often difappoint-ed, and have met with difficulties 5 it mudtherefore be done with great care. Where I defign to cut the ftem, I firftpick off all the rough ftringy bark careful-ly with my nails to avoid making any woundthro* the green inner bark 5 then I cut offthe branch at i, (Fig. 21.) and immediatelydraw over the ftem a piece of dried fheeps-gut, which Itye faft, as near the end of theftem as I can, fo that no fap can get by it;the fap being confined in the gut if: ThenI wipe the ftem at i very dry with a warmcloth, and tye round the ftem a ftiff paperfunnel x i, binding it faft at x to the ftem $and pinning clofe the folds of the paper fromx to i: Then I Aide the brafs collar r overthe gut, and immediately pour into the pa-per funnel melted brickduft cement, andthen fet the brafs-collar into it 3 which col-lar is warmed, and dipped before in the ce-ment;
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Vegetable Stdtkh. 113 cement, that it may the better now adhere :When the cement is cold, I pull away thegut, and fcrew on the glafs tubes. But finding fome inconvenience in thishot cement (becaufe its heat kills the fapveffels near the bark, as is evident by theifbeing difcoloured) I have fince made ufeofthe cold cement of Bees-wax and Turpen-tine, binding it faft over with wet blad-der and packthread, as in Exper. 34, Inftead of brafs-collars, which fcrewedinto each other , I often (efpecially with theSyphons in Exper. 37, and 38.) made ufeof two brafs-collars, which were turned alittle tapering, fo that one entered and ex-a&ly fitted the other. This joining of the two collars was ef-fectually fecured from leaking, by firft a-nointing them with a foft cement; andthey were fecured from being disjoined, bythe force of the afcending fap, by twillingpack-thread round the protuberant knobson the fides of the collars, When I wouldfeparate the collars, I found it neceflary(except in ho

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