OCR Text |
Show GE GE after; for if the Flower of a Lilly be the Means of fecundating the Female Seed in opened before it be blown, the Apex will be found to be full as long as the Stamen, for as the one half of the Apex covers the Stamen, Plants, as the other is of the Feminine Ova in Animals. fixed to its Centre, fo the other half of it is fo far extended above the Stamen, as the Stamen remained uncovered belowit, towards the Pedicle or Foor—ftalk. Thefourth Part of a Flower, is the Petala, whichreceives this extraordinary Supply of Nourifhment before the Blowing : Thefe upon the Reverfe, are firft enlarged towards the Pedicle, and are afterwards extended and ftretch’d forth in Proportion to the Enlarge- ment of the A¢tire; at firft theyare all grofler and more fucculent towards the Origin, and If any one fhall take a Flower full blown, and pull one of the Stamina from the Pedicle, he will find a rough, vifcid Liquor, like to the Sperma, which remains heretill its mot fubtile Parts have either afcended the Stamen; or, perhaps, the more grofs Particles might have remain’d there, after the mof fubtile had afcended, before the Flowerwas blown: This is as plain and demonftrable as canbe in the Lilies; and in the Orange Lily, and mot of the Martagon Lillies, there is a Contri- vance more obvious. This vifcid Liquor afcending byparallel Duds to the Apex, there this fubtile Matter gradually become thinner and broader. The Stamina of Monopetalous Flowers do, for the moft Part, arife partly from the Petalon itfelf, and partly from the Calix; efpecially if is retain’d, til] it is farther e Evaporations of the more humid the Stamina correfpond in Number to the Petala, as in the Hexapetala, or Polypetale Liliacee of Tournefort, where every St becomes a moft fubtile, fine, im which is thenfaid to be ripe, a arifes oppofite to the Middle of the P This Obfervation (how and when, this more than ordinary Supply of Nourifhment is eT ee GE carried to the Flowers) eafily demonftrates wherein the Analogy of the Organs of Gene= ration in Plants and Animals confifts. In Animals, the Seminal Matteris received by proper Veffels from the fame Blood from whence the other Secretions fic for the Pre= fervation of the Animal Oeconomy, pro- ceed; fo that the Blood in Az: being the fame with the Sap in Plants, and both being conve d after the fame Manner, throughout the feveral Bodies, it neceflarily follows, that the one as well as the other, muft have proper Veflels for Secretion of the Seminal Matter. Let it a be confider’d, That the Sap or nutritious uice alice | i Gi > Pedicle Flower ,ee igel CHE ofthe ey ee nee he Blood flows by the Aorta def udens, and that at the Calixor eeu the Flower, fome Share goes to one art of it, and fome to another; as the (iigindoegot 2p Sema vd ee cmainaer it goes to per- pa Pee a ee se and as a Part of he Sa eparated by the Pedicle t Flower, chen the fates ae ae = throughout the remaining Par ee : yes the 4rteria prepa i. - ang . a ae cule ck Oe: vs . eo. direély to the fo male Biber Ve , :s And in. _Hlowers, ten fome Veffels tend diredly to the Calix (if it becomes the Fruit Fel fe acho am) fm a, lor othe Stamina, fome to the Piftilum Tey yee or Uterws, a Sha Malpghiius. bd Wages eo CUE by Thefe Things : being ferionfly tefleGed on, we mutt of ne ceflity conc c lude, ’ 1. That the ¢ame due Care is take n to elaborate and pr epate the moft fubt ile and impenetrable sitic les of the nutr itio us Juice In Plants, as Asof ‘the Bloodin Anim als, ae 10 prep ared, as it muft ' isied tor fome extragrdin« this Ufe can be © Othe de r than ca that ofo eg bein ated bythe and aqueous Particles, by the Heat ofthe‘ + Dr. Blair, after having given the Sentiments of Seven different Authors upon the § proceeds to give his own, with bf to the Sentiment of cither tl other ; and endeavours by tion of the Flowers themfelves, t which of thefe two Opinions, fo cally oppofite to each other, are m able to Fac. But before he begins, he lays downthi i and never recedes from thofe Ru d by the Wife Difpofer of all Things at the C tion, by performing the fame Lhing af iferent and contrary Methods, and rhence con- cludes, That if the Furiza be a C Seminal Plants in one Species, it mu! i a Grains did afcend by the Sty/7s, how do they get into the Seminal Veflel? That being the Apices begin to burft, and fhed the Duft; Part of a Plant, after it has been pluck’d off; hanging downwards, the Particles, or rather Grains of the Fariza can never afcend that clofely fhut up, as will appear to any one who fha!l obferve ir. direé& Paflage, by which it can be ftrated, that one fingle Grain of the Farina canenter every individual Seed in one Plant, it muft be fo in all; but if neither of thele hold good, andifit can be proved byoculat InfpeGion, without the Affiftance of a Micro{cope, in thofe very Plants exempli d_ by Mr. Morland, Mr. Geoffroy and Mr. Bradleys ticular Seed, after it has fo got into the Cap or Siliqua, then he hopes, both their Qu Suppofitions, and Affertions mutt fall. As for the Corona Imperialis, the firft Ex ample given by Mr. Morland, the Flower which hangs downwards ; tho’ he does ot deny but its Stylus may be hollow allthe W and that it may open at the Extremity, ¥ by its Situation and feveral other Circumftances, it does not feem to him to favour this Opinion. For, 1. asthere is a continual Cc Particles through the Skin in Animal ! it is alfo fo in Vegetables; this 2 but as foon as the Flower begins to open, they depart from the Sty/us, and force the Petala outwards, by a certain Elafticity, and expand themfelves: one; fo that if either the Rain or Wind bave upon the Bottom ofthe Flower, and towards the Root of the Pi/tilum But taking it for granted, that it were fo, the Top ofthe Sty/us (which the Door calls the Button, in oppofition to the Apices Stami to it, it muft neceflarily either wath or drive it away from the Seminal Veffel, which is nowthe Stylus. here the Doctor takes notice of another ance for an{wering that Purpofe, 7. e. This being done, they immediately change their Pofture from a perpendicular to an oblique, or horizontal one; nor do they ever pour out their Duft or Fariaa, till they can conveniently drop it of a Pelvis or Ciftern, fituated at the num) he fays is {o compa&, and of fo firm a Subftance, that it is next to impoffible that gin or Root of each Petalon, filled with a vifcous Liquor, which continues there, and never exceeds its Bounds, fo long as the Peralon is in Health: For fiuce the Apices are here fo artfully fix'd, that they every Way with the If the integral Parts, the compleat Grain, feaft Wind, as Mr. Morland rightly obferves, when they burft, and the Faviza is driven to and fro, though it cannot fo eafily enter the Tube, towd yet it may conveniently be blown up the Orifice of the Petala furrounding S where it is toppedor ftaid by t ficy till it has performed its Offi oconfirmthis, he ir rho, he fays, being perfua 2 in Subftance, or in integral Parts, hit. the minute Globuli, in which the whole Semi= nal Plant ts contained cannot then enter, the whole Compound muft be diffolv’d, and the minute Seminal Particles in this {mall Grain of Duf muft be difunited ; and if fo, how fhail thefe in come to cement, fo as to make up one continued Body? Orhowfhall this lictle Bodyfo united, penetrate a fecond time the Partition Wail betwixt the Sty/us and Piftillam? And again, howfhall it find out its Way to its Neft, in the proper Embryo of the Seed? sthe Fruétifying of this Plant; but not tanding howit did fo, he tried the ent, by wiping this Liquor off as foon d in the Pelvis, and the fo ferved did not bear any in Subftance, cannot enter the Seminal Veffel: or if it does, that there is no dire@ Paflage for it to enter each the Top ofthe Siy/as, and that this is before Raia either wajhes it, or the Wind fhakes it dowa the Tube, till it reaches the Seminal Viffel; obferves, that the Extremity, which is the upper Part of the Sry/us in an ere@ Flower, muft be the lower in a dependent he If there be an openanddire@ thoughit be not fo dire, yet, if by that the Fariza fame Way. 2. That if it fhould be granted, that thefe Imperialis, it is naturally endowed with this Humidity depofited there by feveral excretory Dués, in order to render it fit for the Purpofe: And Malpighins himfelf takes notice of this Singularity in this Fiower, tho’ he afcribes no Ufe to it. The next Example propofed by Mr. Mor= land, is the Yelow Lily, which, according to his Figure, is reprefented as having Apices equally high with the Top of the Sty/ws and the Petala over-topping each other; whereas he fays, that by the narroweft Infpe@ion he ever could make, the Top of the Apices (they being then perpendicularly fituated) reaches no higher than the Neck of the Button upon the immediate fading of Flowers, or any other which proceeds from the Evaporation of the Particles in the little Tubes, without any more fucceeding in their Place. He thinks it as reafonable to fuppofe, that thefe Particles flow out by the hollow Sty/m, as by any other Part, and alfo more fenfibly there than elfewhere, becaufe oftheir being concentrated within fuch narrow Bounds; and that if thefe Particles defcend by the Stylus 3. Whereas Mr. Morland fuppoles, That the id, general Maxim, which he ta That iture is uniform in all GE being removed, the ?is no fooner blown upwards, than it cdiately fails down, without producing Effect; and that which he takes to be a on of this, is, that both Tulips and this Pelvis or Bafon, yet it is moft part dry and empty; becaufe r g erect, efpecially the for- The Do@or takes notice of the White Lilly, the Orange Lily, the Martagon Lilly, @c. as Objections to the Opinions of Mr. Morland, B y, @c. and alfo mentions the Jr7s, as a moft pregnant Inftance, that the Farina can—not fo much as come at the Piftillum; for having fix Petala, the three Stamina with long Apices, lie hid between the three Peta/a which hang downwards, andthree large Expanfions of the Bifid Stylus, and the upper Part of the 1c -h s Out-fide, to the Top and Out-fide Rudiment of the Fruir, there to emit to fuch need of this Liquor > Duft; for that the Rain having n, may wafh the la, where orm’d its Office ; Rain having no Accefs to the of the Flower of the Corexa ing Petalon: The Farina can never r of the Stylus, tho’ it were which it is nor; but muft defcend d other Inflances, he concludess are fuf t Proof that tt rina cannot enter the Sty/us, penetrate ir the Piftillum or inner Part of the Seminal Veffel, nor have the leaft Accefs to the Embryo ofthe Sced. As to the Objeétion, That there is not Paflage fufficient to admit the Male Sced into the |