Page:Treatise on Soap Making.djvu/101

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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.
3pails,orcouls,at16each,is48
3ditto,ditto,at10ditto,is30
3ditto,ditto,at8ditto,is24
9 102
9)102(11 3/9, or 1/3, the standard for boiling ley.
9
12
9
3
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