Pbhilofopbical Hiftory of Plants 
its oyl, a fubacid Water 5 Vinegar, an Eager Spirit; as that part may 
be called, which Chymists are wont to call the Phlegm. 
41. $. By Arefaction3 fo Milks which are Liquid, and White in 
their Natural Eftate, in Standing, grow Gummous, Yellow,and other- 
wife different, o doth that of Scorzonera 3 and that of Fenil becomes a 
Balfamical, but Limpid Oj. The Roots of Angelica, being dry'd,and 
cut by the length, exhibit their {mall Veins fill'd with an Aromatick 
Rofin. In the whiter parts of Rhubarb, isgathered a kind of Saline 
Concret 3 by which, this Root, in chewing, feems as if it were a little 
gritty. Cabbage-Stalks, fliced, and laid inthe Shade to dry, gather on 
them a kind of Nitrous Hoar. Raifins and Corins contain, not only 
a Sweet Juyce, but alfo a true Sugar, which lies curdled in the Pulp, 
asthemore Saline parts doin Green Soap. And the like is gather'd 
on the out-fide of a Fig ; faving, that it is more Nitross, as lying next 
the Aer. The Roots of Arum, upon drying, lofe much of the ftrength 
of their Taf?e ; but thecontrary maybe noted of many other Roots, 
which, upon drying, increafe it. Some, being cut and laid by, change 
their Natural Colours, into Red, Purple, Yellow, Green, or White 5 
as Liquorifb, into White, in fome places; and Peony, into Red: and 
fometimes into two 5 as Patience, into Yellow and Red. 
42. $. By Affation thus Apples, by roalting, eat more Sowre. The 
Root of Horfe-Radifh, toafted, tafteth like a Turnep. Potatoes, Oni- 
ons, and many other Roots, and Parts, have their Tafles, either Alte- 
red or Refracted which chiefly, and in what manner, fhould be ob- 
ferved, There is one alteration, as remarkable, as commonly known 5 
and is that which followeth upon roafting or baking in one kind ofthe 
Waldenfian Pears, which, for a Walden, we corruptly call a War- 
den. 
43. $. By Uftion; wherein fome Plants, or Parts of them, burn 
very quietly ; others, not without violent motions; fo Fenil-Seeds, 
held in the flame of a Candle, will fpit and fpurtle, like the Serum of 
Blood. Some Vegetables lofe their Smell, as Rofes; others, keep it, 
as Rofemary; and others, mend it, as Lignum Aloes, To note, not 
only the alteration of their Qualities, but what they yield 5 as Turpen- 
tine, which, in Diftillation, yicldeth Oy! and Water, bothlimpid ; upon 
Oftion, theweth nothing but a black soot. So Benzoine, by Diftilla- 
tion, Oyl; by Ustion, white Flowers, as is known. 
44. $. By Calcination ; and here to obferve, wherein the Caput 
Mortunm of one, may differ from, or agree in Nature with that ofano- 
ther; andalfo to comparethefe with thofe of Avimal Bodies. As alfo in 
their Quantities. Andtocompare them with what they yield by Di- 
fillation and Ustion asto both. Thus far they have been tryed: fin- 
ly, or by themfelves. They fhould alfo be examined, 1 
45. $. By Compofitions notonly withWater, as in fimple Infufions, 
Sc. but with any other Bodies, which may have a power of acting 
upon them, or upon which, thefe may havea power to aét. And fo 
to make Infufions, Defillations, Decottions, Digeftions, in divers kinds 
of Liquors, as Vinegar, Urine, Spirit of H. H. Wine, Blood, Milk, 
or others. Soin Infifions, fome Red Colours are heightned by Acids 5 
Blews, turned Purple.So fetid Spirits (as of H.H.) maybe rendred much 
more grateful, by being Reéfified, once ortwice, with frefh Aromaticks, 
To obierve alfo what follows, upon mixing the Liquors, or other Parts 
of 
