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Show Al Al and rifes by Cooper ation of the Sun Cwhich is the third Agent in V egetation) up to the Top ids rife by Fire ofa Treee, sc. as Li Top of = containing Vefiel. to the This Air, we find, produces vibratory Mo- in tion in feveral Bodies, and =e Office Plants; the Air Veffels thereof do the was produc ible from Vegetables, by putting Grapes, Plumbs, Goofeberries, Peas, andfeveral ar Sorts of Fruits and Grains into exhaufted and unexhaufted Receivers, where they continued for feveral Days emitting great : Qua tities of A of Lungs: For the Air contain’d in them, expandfometimes contracting and fometimes This put the curious Mr. Hales upon farther Refearc hes to find out what Proportion of ir he could obtain out of the different Vegetab] in which it was lodg’d andi ¢ he performed bydivers chi diing, according as the Heat is inoteas'd or minifhed, preffes the Veffels, ..and eafes them ments, which he gives in many again by ‘Turns, and thus promotes a Circulahis Treatife of Analyfis of th tion oftheir Juices, which could fcarce be fhewing in what Manner he performed tt ; effected. otherwife and the Events of them. Air, fays the learned Mr. Hales, isa fine That, from half a Cubick Inch, different very of Particles with Fluid, laftick Grains of Heart of Oak, frefh cut admirably is wherebyit it, ih ting =atures ‘Tree, pete were 108 ee Inches fitted by thre great Author of Natureto be the growing ch is a Quantityec qual ‘generated, Air of Anias well as Vegetables of Life Breath of times the Bi uk of the Piece of Oa 216 to nor morelive no can they which mals, without that the Weight ofit was above 30 Grains, thrive than Animals can. one Quarter Part of the Weig he of 135 in ofAir Quantities great Asa Proof ofthe Vegetables, he refers to the third Chapter of Grains. his excell ent Treatife of etable Staticks, where, he fays, in the Experiments on Vi the great Quantity of 4ir was vifible, was. continually afcending through the Supin the Tubes; which manifeftly; fhews what Pi nty ofit is taken in by Vegetables, and is perfpired off with the Sap through the Leaves. He adds feveral E xperiments, as to an Apple-Branch, Apricct-Branch, Birch, and other Flants, to prove the peeThi has obferv’d, that the Pores Arge cha he Trunksof fome Plants; as better Sort of thick walking Canes, that they are vifib le to a good Eye without a Glaf&; but, with a Glafs, the Cane feems as if ftuck at ger ensAA Gra Grains deducted fr main 91 Grains forthe { Then 30 Grains will be Weight of the et al of the Pins, fo large as very well to refemble the Pores of ches kin in the Ends of the Fingers, and Bali of the Hand. In the Leaves of Pines, they are likewife through a Glafs a very elegant Shew, ftanding almoftex:actly in Rank and File through the Length of the Leaves. Whence - may be thought probable, that the Air freely enters Plants, not only with the principal Fund of Nourifhment by the Roots, but alfo through the Surface of their Trunks and Leaves, efpecially at Night, when they are changed from a perfpiring, to a ftrongly imbibing State. Mr. Hales likewife tells us, that, in all thofe Experiments that he try’d to this Purpofe, he found, that the Air entred very flowly at the Barkof young Shoots and Branches, but much with the ee he found by feveral Experiments, which he gives in the before- mentioned Treatife The excellent Mr. Boyle, in making many Experiments on the 4ir, among other Dif: coveries, found, that a good Quantity of Air May, were abforb’d. The Liquot was atlaft On the roth of Ayguft 26 Cubick Inches of Applesbeing marfhed, they generated 968 Grains of Peas generated 396 Cubick dir, oF 113 "Crain ges= the 2, fomet .i f in Grains of t of Air were gencratec is more than one SR Or9 Gra On the fecond Day of Marc 42 Cubick Inches of Ale from ¢l had been there fet to ferr fore into a Bolt-head ; Inches of Air, wit av fion , moreorlefs cool, or cold, and fometimes upon from wart to cool, it reforbed ir, in 32 Cubick Inches. Fromthe 2d ofJoe to the 12 Cub Inches of Malaga Rai Cubick Inches of W bick Inches of Air aga 35 Cubick snches in two or tl Parts of thofe Bodies, viz. their Water, Fire, Salt, and Earth. fo conclude, by reafon of thofe Properties of the dir before-mentioned, it is very {erviceable to Vegetables, in that it blows up and breaks open the Clouds, t hofe Treafures of Rain, which fertilizes the vegetable Kind. The fralfo helps to waafte:away or difperfe thofe foggy humid Vapours which arife from the Earth, and would otherwife ftagnate and poifon the whole Face of the Earth. The Air, by the Affiftance of the Suu, af fumes and fublimates thofe pia da into the g the Weather was thenveryhot; after Time they were ftationary for many neither generating nor abforbing. which ee mention’d Experiments sand Ale, the ingenious Author conthat Winecand Ale do not turn va m Weather by imbibing the ir, but enting and generating too much; by which Means they > deprived of their enlivening < ple the 4ir: For which Reafon thefé Liquots are beft preferved in cool lars, reby this active invigorating Principle is kept within due Bounds, which when oy, ee Wines are upon the Fret, eer ofbeing {poil’d. great Quantities fromfe lving Vegetables, is true perhis certain, by its continuexpanded andelaftick State for many and Months, which expanded, watery Vapours will not do, but foon conhe concludes, that F Subftances, and bears a in them; And, if all the re only endowed with a attracting Power, whole Nature rediately become one unactive abfolutely neceffary, in oractuating lowing. elaftick active State, and alfo by greatly contributing in a fix’d State, to the Union and firm Connexion of the feveral conftituent tity equal to 48 times their Balk ; after wvhich they did reforb a Quantity equal t Bulk, in three or four Days, notwith- Part of the Ounce Plenty of Ar incorporat into the ftance of Ves Jes, which, by the Fermentation, j 1 as is evident Sore theie Bspétiner 3 vigorating their feveral Juices, while in an bick Inches of Air in 13 Days time, which in, oe a “ more freely through old Bark ; and that, in different, Kind of Trees, it had different De- to the “ of Fun grees of more or lefs free Entrance. And likewife, that there is fome ir both: in an elaftick and unelaftick State, mix’d with the Earth (which may well enter the Roots From the axft of April to the 16th of it generated 48 Cubick Inches ; after which, the oth of Fune, it contioe in a reforbing State, fo as to reforb 13 Cubick Inches: That there was at that Se fon eg hot Days, with much Thunder and Lightning, which deftroys the Elafticity of the Air; fo there were sneratedin all 4.89 Cubick Inches, of which many other Experiments, Author has given in his he obferves, that this Vhe ea ofit, w he took 3 come to its ful! Maturity, and tha oe rated from it 270 Cubi the fhe ei ght ofaioe Z top full of Holes with great AL that th re this vz aft Mafs of attract- ild be every w = hich might e ne effant AGtion articles are cont e reduced by the tracte 1S, ftom an elait was therefore necef ld be endued ir elaftick State rom that Mafs I iS *d and mal upper Regions ; and thefe foggy humid Vapoursare, “by this Sublimat on, and the coercive Power ofthe 4and Sti, Taarefied and made offecond Ufe in Vegetation. And, on the contrary, to the benign Quality of the ir, which is fo many Ways iub- fervient to Vegetables; fo it is allo fometimes, and upon fome Accounts, injurious and ‘pernicious to them; not only to the ligneous, herbaceous and flowery Parts above, but alfo to the Roots and Fibres below: For in that the 4ir penetrates into the Earth, it is eafy to be concluded, that adry, husky, icorching ir maybe veryprejudicial to the tender Fibres of new-planted Trees. It maybe likewifé fuppos’d, that all Bodies of Earth are more orlef capable of imbibing the fluid = 9 andofattracting fuch Salts as either the can give, or the Earth is capable of receiving. ALA, is the Hollowofa Stalk, whicheither the Leaf, or the Pedicle of the Leaf, makes with the Stalk or Branches ; or it is that hollow Turning or Sinus plac’d between the Stalk or Branch and Leaf, from whence a new O {pring is wont to put forth, which the Zrench Aiffelles des Plantes. Sometimes it is aken for a little Branch ; as when theyfay a Stock or Stem, arm’d with many Ala, be- caufe Branches grow to the Stoc fo many Wings. Ax »is alfo ufed to fignify thofe Petale of papilionaceous Flowers plac’d between the Vexiljum and the Carina, which the Fr Les ailes des Fleurs legumineufes. Ax -w# is alfo ufed for thofe extreme flender meémbranaceous Parts of certain Seeds; as in 1, Plumeria, the Fruit of the €8c. which the French call Semences Again, Ax -# is ufedfor thofe foliaceous Membranes which run the whole Length of the §Stem ; hence i1 latus, €a winged whence 440LUS, inge Stem ; ALABASTRA, are thofe ous Leaves that encompafs Flowe ybe the Glob ccping Out, |