311 Of p'egetauon. 
age, when their quantity of oil is increafed, 
with their greater maturity. 
Whence we find that nature's chief bufi- 
nefs, in bringing the parts of a vegetable, 
efpecially its fruit and feed to maturity, is 
to combine together in a due proportion , 
the more adive and noble principles of ful- 
phur and air, that chiefly conftitute oil, 
which in its mofl: refined ftate is never found 
without fome degree of earth and fait in it. 
And the more perfed this maturity is, the 
more firmly arc thefe noble principles united. 
Thus Rhenifh Urines, which grow in a more 
northern climate, are found to yield their 
Tartar, u e. by Exper. 73. their incorpora- 
ted air and fulphur in greater plenty, than 
the flronger Wines of hotter countries, in 
which thefe generous principles are more 
firmly united : And particularly in Madera 
Wine, they are fixt to fuch a degree, that 
that Wine requires a confiderable degree of 
warmth, iuch as would foure many other 
Wines, to keep it in order, and give it a 
generous tafire ; and 'tis from the fame rea- 
fon, that fmall French Wines are found to 
yield more fpirit in diftillation, than ftrong 
S^anijh Wines. ^ But 
