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or boiling ley, be had from the composition. If too weak leys are used, there is a danger incurred of spoiling the whole soap, which is hardly to be righted again.

To guard against this great evil, observe the following rule: Suppose there is three leys of different qualities to be boiled with, two of them is over weak, one is too strong; try their strength mixed together, thus:

				drams.			drams.
3	pails,	or	couls,	at	16	each,	is	48
3	ditto,		ditto,	at	10	ditto,	is	30
3	ditto,		ditto,	at	8	ditto,	is	24
9							102

9)	102	(11 3/9, or 1/3, the standard for boiling ley.
	9
	12
	9
	3