14^ ^/2 ESSAY Chap.5. 



tions, the more reafoii we have to be ama- 

 zed at them. But to proceed : 



Thus we fee in Vegetation, it mixes and 

 infinuates its Aerial Subftance into the Liquid 

 Sap : And as all the Agitations in Nature are 

 caus'd by the contrariety of Parts inhabit- 

 ing together ^ fo in this, the Aerial and 

 Liquid Subflances, being mix'd, caufe this 

 Agitation and Motion, or, more properly, 

 fet it all into a Ferment, ( be it either in the 

 Roots or in the Stem,) and rifes (by the 

 Co-operation of the Sun, which is the third 

 Agent in this Work) up to the top of the 

 Tree, as Milk, or any other Liquid rifes by- 

 Fire to the top of any Tube, or other kind of 

 Veflel. 



And to fhew the Predominancy of Air in 

 this Point : As the deprivation of it from a 

 living Creature, is attended with immediate 

 Death 5 fo, no doubt, were the Experiment 

 made, were a tender Plant or Tree put into 

 a Glafs-Veifel, and the Air pumpt out, we 

 Ihould fee it fall proftrate, tho' perhaps not 

 fo foon as Animals, neither would they fhew 

 thofe dreadful Convulfions, nor yet afliime 

 their firft State fo foon again. 



On the other hand 5 As the unwholfome 

 Concuflions of Air oft throw the Body into 

 great Colds, and after that into the moft vio- 

 lent Fevers 5 fo, in Vegetation, it often makes 

 its Procefs abortive, and attended with the 

 difmal Calamities of Biafls, &c. 



This 



