IV 



I. 



I. 



^ b 



Me. 



o\v 



1 



ersof 



asfr 



abo 



ut 



911 



' ^ of gar. 



G' 



^rn being 



-^ neigh. 

 ^'i of too 

 le, by the 



^^vaterto 

 are more 

 3U n g cab- 

 5 received 

 » atered in 



j to a lefs 

 ation be- 

 to much 

 mmation, 



fe people, 

 -bs. ^^' 



rea 



t an 



, they 



fed the 



d beat 



be 



>a to 



tbeir 



eat 

 oc 



cafio"' 



-ell as by 



^ve 



•'; 



on 



joiis 



) 



\^ 



Sect. XIV. i. i. 



OF PLANTS. 



2^9 



o- than In the au 



will crerminate with much lefs heat in the fp _ 

 rum.r- as is eafily obfervable, where thefe roots are ftored for uf 

 a"d he'uce malt islft made in the fpring, as the barley wrll then ge 

 minate with a lefs degree of heat 



The grains and 



brought from more fouthern latitudes ger 



D 



minate b 



fooner than thofe, which are brought from 



O 



their acquired habits. Fordyce on A 



It was obferved by 



f the fchol 



f L 



that the appl 



fent from hence to New England bloffomed for a^few y 

 ly for that climate, and bore no fruit 



but afterward 



commodate themfel 



to th 



fit 



(Kalm's Travels.) 



pe houfes, which h 



Vines in 



cold, will become forward 



been expofed to th 



winter 



and more vigorous than thofe, which 



have' been kept during the winter in the houfe. (Kennedy on Gar 

 dening.) This accounts for the very rapid vegetation m the northern 

 latitudes after the folutlon of the fnows. , ^ t_ / r. 



The increafe of the irritability of plants in refped to heat, .after 

 having been previouHy expofed to cold, is farther illuftrated by 

 periment of Dr. Walker's. 



He cut apertures into a birch-tree at dif 



ferent height 



and 



6th 



f March fome of thefe apert 



bled, or 



ozed with the fap-juicc, when th 



mometer was at 



09 . which fame apertures did not bleed on the 1 3th of March,wheii 

 the'thermometer was at 44. ^I'he reafon of this I apprehend was, be- 

 caufe on the night of the 25th of March the thermometer was as low 

 as 'u; whereas on the night of the 12th of March it was at 41 ; 

 though the ingenious author afcrlbes it to another caufe. Tranfad.of 



the Royal Society of Edinburgh, V. 1. p. 19. 



There is an obfervation in Mr.Tull's work, which he ingenioufly 



afcrlbes to the acquired habits of plants. " By the extremely hard 



winter of th 



y 



8 or 



9, fome lucern in Laogued 



was 



killed, alone with all the olive tree^ and walnut trees by the feverity 



of th 



leafon ; though 1 could not hear that one walnut tree was 



o killed 



