

' .. - 



Of l' r c^etal'wn. 321 



fulphur and air, as we fee by Expcr. $6, 

 57, 58. which Seeds containing the rudi- 

 ments of future vegetables, it was ncccflary 

 that they mould be well ftorcd with princi- 

 ples that would both prclerve the Seed from 

 putrefaction, and alio be very aclivc in pro- 

 moting germination and vegetation. Thus 

 alio by the grateful odours of flowers we 

 arc allured, that they arc ftorcd with a very 

 fubtile, highly fublimcdOil, which perfumes 

 the ambient air, and the fame may be ob- 

 ferved from the high taftes of fruits. 



And as Oil is an excellent prefcrvative 

 againft the injuries of cold, fo it is found 

 to abound in the fap of the more northern 

 ttces 5 and it is this which in evergreens 

 keeps their leaves from falling. 



But plants of a lefs durable texture, as 

 they abound with a greater proportion of 

 Salt and Water, which is not fo ftrongly 

 attracting as fulphur and air, fo are they lefs 

 able to endure the cold 5 and as plants are 

 obferved to have a greater proportion of Salt 

 . and Water in them in the fpring, than in 

 the autumn, fo arc they more eafily injured 

 by cold in the fpring, than in a more advanced 



age, 





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