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Show 106 VEGETABLE IMPREGNATION NoTE XXXVIII. 7. From thefe facts it appears that the flower-bud after the carol falls ofF, (which is its lungs,) and the fiamens and nectary along with it, becaufe fimply an ute~us for the purpofe of fupplying the growing embryon with nourifhment, together With a fyfie.m of abforbent veffels which bring the juices of the earth to the footflalk of the fru1t, and which there changes into an artery for the purpofe of di{tributing the fap for th~ fecretion of the faccharine or farinaceous or acefccnt materials for the ufe of the embryon. At the fame time as all the vdfels of the difFerent buds of trees inofculate or communicate with each other, the fruit becomes fweeter and larger when the green. leaves continue on the tree, but the mature flowers themfelves, (the fucceeding fruit not conlidered) perhaps fuffer little injury from the green leaves being taking off, as fome florins have obferved. 8. That the veiTels of difFerent vegetable buds inofculate in various parts of their circulation is rendered probable by the increafed growth of one bud, when others in its vicinity are cut away; as it thus feems to receive the nourifhment which was before divided amongfi many, NOTE XXXVIII.-VEGETABLE IMPREGNATION. Love out his hour and leave bis life in air. CANTO IV. 1. 460. FROM the accurate experiments and obfervations of Spallanzani it appears that in the Spartium J unceum, rufh-broom, the very minute feeds were difcerned in the pod at leaft twenty days before the flower is in full bloom, that is twenty days before fecundation. At this time alfo the powder of the anthers was vifible, but glued faft to their fummits. The feeds however at this time, and for ten days after the bloffom had ' fallen off, appeared to confifl: of a gelatinous fubaance. On the eleventh day after the falling of the bloiTom the feeds became heart-fhape, with the hafts attached by an appendage to the pod, and a white point at the apex; this white point was on prefiure found to be a cavity including a drop of liquor. On the 25th day the cavity which at firft appeared at the apex was much enlarged and fiill full of liquor, it alfo contained a very fmall femi-tranfparent body, of a yellowifh colour, gelatinous, and fixed by its two oppofite ends to the fides of the cavity. In a month the feed was much enlarged and its fhape changed from a heart to a kidney, the little body contained in the cavity was i.ncreafed in bulk and was lefs tranfparent, and gelatinous, but there yet appeared no organization. NOTE XXXVIII. VEGETABLE~ li\J.PREGNATION Onthe4othdaythecavitynow row • 107 was covered with a thin membrane~ f n lahr?er was quite filled with the body ... h. h P 1 f b . , a ter t 1s m b , •• 1c . carec o a nght green <ttld fil em rane was removed the b d • • ' < was ea 1 y div"d db . o yap-twns, wh,ch manifeaJy formed the two lob~s e y th~ ~otnt of a needle into two por-part the exceedi ngly fm::~llj)lazJt ·I ,, and Wtthtn thefe attached to th l Tl1 c forc ,.oing obferv t. c was calily · e ower 1. • percc1vcd. o a IOns ev1nce 1 Tl days before fecundation 2 1~1 ' . lat the feeds exi{t in the o . · · l:Jt they r · [, vanum many containin~ ~ liquid is formed in them. cmam or fame time folid, and then a cavitv appear Wllhm the Ca\·ity fixed b ~· That after fecundation a body b . , y two points to I fid egms to proves to be two lobes containing a pi I t le I es, which in procefs of time I o b cs at II len.n g to a plantule d li antu c. 4 . TJ lat t Il C n.p e feed co fin. f · ' an urrounded b 1 . n IllS o two wuh a hulk or cuticle. Spallanzani's D'!Tc y.a tl•n membr:lne which is itfelf covered The. ana lo gy b etween feeds d I ertatiOn~_ , Vol · II · P· 253· d . an eggs has long b b{; mo e of tlteJr produClion. Thee . 1 een o crved, and is confirmed by t!J · · gg IS (nown to 1 t; e Its Impregnation; C F Wolf tii h )e ormcd within the hen long b fi · · a erts t at the olk f h . e ore <J[ the mother, and that it has from tholi . y . o t e egg IS IIOJtrifhed by the veffiels · · e Its artenal a d ImpregnatiOn thefe veiTcls gradual ly bee . . n venous br::~nches, but that after orne ImperviOus d bl" ones are produced from the f~tus and d'li fi d . :ln o Hcrated, and that new To VIII 1 per e In to the Ik H , m. · P· 94· The youn<> feed after fi 1 . yo · aller s Phyfiolog {i .1 o • ecunc at JOn I li r · • tml ar manner from the aelatino I' . . ' uppo!C, IS nourinJed in fi b us tquor, whtch IS . 0 a po e ; the uterus of the plant producing fi . . . previOu y depolited for that pur-l or ecrctm"' It lilt .r; . t le embryon is lodged and that th b . o are ervotr or amnios in which f . . ' e young embryon Is fi . ·n d . a part o tt, as In the ver}' early emb . I . utnt Ic wah veiTels to abforo 1'1 le fip awn of frogs and of fiili. . dr y]"o n In t Je animal ut crus. M B IS e tvered from the fcm 1 b c . • . onnet fays th:lt the male r I d . a e e,orc Its unpregnation . 'a aman er darts h1s fe · · forms a little whitifh cloud which . c . men Into the water, where it fi 1 Is a, terw:uds received b I f ema e, and fhe is fecundated.-H ·'d h . y t te woln anus of the I e :lu s t at manne plants a h mas, as the m:1le does not pro· n fi pproac ncar to thefe ani-r ~el-l a ne powder but j' h" h · JOrms a little cloud in the water -A d f 1 a tquor w IC tn like manner l fl . • n urt 1er adds who k b t 1e namlna of certain plants rna k I" . ' . nows ut the powder of • Y ma e ome unprcffio · mg to the animal kingdom! Letter XLIII S .n on certam germs belong- Spall'~n'lani found that the feminal fl "d . tfof pallanzant, Oellvres Philof. . lll o rogs and do h · . much water retained its prolific 1' WI . gs even w en Jduted >nth . . qua tty. Jether thi~ quality b li I n· Citing the egg into animal actJ.OIJ 1. h b . e Imp y a lllmulus ex- ' w 11c may e called a · f · · · part of it be actually conj'oined ·"th I . YIVJ ytng pnnciple, or whether "I t Je egg IS not yet d ·t . I h ' feems more probable from the [ fi e ermmec' t ough the latter . . requent re emblance of the fetus to th I conJunctiOn hoVI·ever of both the male a d c I . fl e mae p:treut. A n 1ema e In uence feems {[ fi ~urpofe of reprod•.tction throughout all oraanized nature :JS . II .nelce ury hor t.he 111fects micr {(· · · . 0 ' • ~~ e tn 1erm:~p rodne bllds oi vcgct~bcl:~~~s ~~\I~als, a;Jc~~olypi; an~ exifls :Js well in the fornJ:ltion of the and ex lained b . . Je proc u ~~n o their feeds, which is ingenioufly conceived , p y Linneus. After havl!lg compared tile flower to the larva of a butt rfl 0 2 e y, |
