vL,| NoTE XXXVII. VEGETABLE RESPIRATION.. 455 | 08| and complete their impregnation early in the ſpring be- ter| fore the green foliage appears, as Mezereon, cherries, ren| pears, which ſhews that theſe corols are the lungs belong- nean ing to the fructification. ons| 4. This organ does not ſeem to have been neceſlaäry ) Its for the defence of the ſtamens and piſtils, lince the calyx eli of many flowers, as Lragopogon, performs this oflice; ea, and in many flowers theſe petals themſelves are ſo ten- en)| der as to require being ſhut up in the calyx during the ſome night, for what other uſe then can ſuch an apparatus of'4 to th veſlels be deſigned?| uw 5. In the Helleborus niger, Chriſtmas-roſe, after the| eoetg:'S ſeeds are grown to a certain ſize, the nectaries and ſta- j vall mens drop of, and the beautiful large white petals change| en their colour to a deep green, and gradually thus become| ſent] a calyx incloſing and defending the ripening ſceds, hence 4 it would ſeem that the white veſſels of the corol ſerved| 08 the ofice of expoſing the blood to the action of the air,] A:;: ZB. Wb ijor the pyrgeles of ſeparating or producing the honey,] WG, wax, and proific duſt, and when theſe were no longe | vanted, that theſe veſſels coaleſced like the placental vel- k:| ſels of animals after«heir birth, and thus ceaſed to per- EWR form that oflice and loft at the ſame time their white cOo- dorfer 1? Jour. Why ſhould they loſe their white colour, unleſs 0), and they at the ſame time loſt ſome other property beſides that tb| that of defending the ſeed-veflel, which they Mill continue nani 1! to defend? 16,| 6. From theſe obſervations I am led to doubt whether mamis| oreen leaves be abſolutely neceſlary to the progreis of the N] NE| ſruit-bud after the laſt year's leaves are fallen OW."Tüe x J10WOR| G FE | |

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