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[Page 2]
connected, with ye same substances ; Therefore we must discover it by analyzing . -
Oyl, gum, or rosin, to which colour can be connected, or melted; not being soluble in ye same dissolvant: that analysis will become very easy. -
1st. put in hot water the Vegetable you will analyze, you shall draw of it,the Muscillaginous or gummous part, which are both soluble in water.
2.ly If you have no Colour, by that operation. The same Vegetable already dipriv'd by the water of its Gummous Part ; will give you his rosin, in putting it in some Spiritus Vini
3.ly if no Colour appears by that operation, the colour is surely left in a particular Oyl, out of which, you'll take it by the aether Liquor; or by alkaline dissolution: or by some acids softned by water: both alkaly & acid making equally a kind of soap, by their Combination with ye Oyl. -
It seldom happens that the two first operations be insufficient: but when they are so, you must deep [dip] the vegetable in an alumous dissolution: & then your Tincture will be as good as possible. Because it is the alumous