Of Vegetation, 341 



ing the mixture according to the many 

 different purpofes (he defigns it for 5 either 

 for long or more lax fibres of very different 

 degrees in animals, or whether it be for the 

 forming of woody or more foft fibres of 

 various kinds in vegetables. 



The great variety of which different fub- 

 ftances in the fame vegetable prove, that 

 there are appropriated vefTels for conveying 

 very different forts of nutriment. And in 

 many vegetables feme of thofe appropriate 

 vefTels are plainly to be feen replete either 

 with milky, yellow, or red nutriment, 



Dr. Keill, in his account of animal feore- 

 tion, page 49, obferves, that where nature 

 intends to feparate a vifcid matter from 

 the blood, fhe contrives very much to retard 

 its motion, whereby the inteftine motion of 

 the blood being allayed, its particles can the 

 better coalefce in order to form the vifcid 

 fecretion. And Dr. Grew, before him, ob- 

 ferved an inftance of the fame contrivance 

 in vegetables where a fecretion is intended, 

 that is to compofe a hard fubftance, viz. in 

 the kernell or feed of hajrd ftone fruits, 

 which docs not immediately adhere to, and 

 grow from the upper part of the ftone, 

 Z 3 which 



