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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m thence 5 and after it has acquired fuf-ficient ftrength, as this tender ductile rootis extending from z to c, it muft necefla-rily carry the expanding Seed-lobes upwards,at the fame time that the dilating from zto d makes it fhoot downwards ; and whenthe root is thus far grown, it fuppiies thePlume b with nourifhment, which therebyfwellingand extending opens the lobes a r?a r, which are at the fame time raifed a-bove ground with the Plume 5 where theyby expanding and growing thinner turn togreen leaves, (except the Seeds of the pulfekind) which leaves are of fuch importanceto the yet tender Plume, that it perifhes,or will not thrive if they are pulled off;which makes it probable, that they do thefame office to the Plume, that the leavesadjoyning to Apples, Quinces and otherfruits do to them, viz. they draw fap withinthe reach of their attraction; fee Exper. 8and $o. But when the Plume is fo far ad-vanced in growth, as to have branches andexpanded leaves to draw up nourifhment j then
Text Appearing After Image:
Of Vegetation. 3 j i then thefc fupplemental feminal leaves,* ry*r,being of no farther ufe, do perifh $ not onlybecaufe the now grown and more expandedleaves of the young plant or tree, do (6everfhadow the fupplemental leaves, thattheir former more plentiful perfpiration ismuch abated 5 and thereby alfo their powerof attra&ing ftp fails 5 but alfo becaufe thefap is drawn from them by the leaves, andthey being thus deprived of nourifhmenr,do perifh. As the tree advances in ftature, the firft,fecond, third, and fourth order of lateralbranches moot out, each lower order beinglonger than thofe immediately above thcm$not only on account of primogeniture, butalfo becaufe being inferted in larger partsof the trunk, and nearer the root, theyhave the advantage of being ferved with grea-ter plenty of fap, whence arifes the beau-tiful parabolical figure of trees. But when trees ftand thick together inWoods or Groves, this their natural fhapeis altered, becaufe the lower lateral branchesbeing

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