SCHOLIUM.
'Tis here to be noted once for all, that in this and divers other Chymical Experiments, there is sometimes much more deliver'd than is necessary to make good the Title, or the thing mainly in∣tended. But 'twas thought fit, not to Dismember or Mutilate the entire Memoir as 'twas regi∣ster'd, because that of the other Particulars some may be, tho in∣directly, refer'd to the principal part, and others may be look't on as Phaenomena, which may be of use at least to me, by keeping me from forgetting them, and pro∣bably tend to the main design of all these Experiments, viz. to