he wrote likewise an intire work on chymistry, explaining the principles of matter, & elementary components, from that abstruse art; on experimental, & mathematical proof. he had himself a good opinion of this work. but the manuscript was unluckily burnt in the laboratory, which casually took fire. he never could undertake it again, a loss not to be sufficiently regretted. Dr. Friend endevord at a thing of this sort, which is not unworthy of commendation; his purpose was some attempt to supply our want of it. as to chymistry in general, we may very well presume, Sir Isaac, from his long, & constant application to that pyrotechnical amusement, had made very important discoverys, in this branch of philosophy. which had need enough of his masterly skill, to rescue it from superstition, from vanity, & imposture; and from the fond inquiry of alchymy, & transmutation.
Dr. Newton tells me, that several sheets of his optics were burn't, by a candle left in his room. but these I suppose he was able, by a little pains, to recover again. or if there be any imperfection in that work, we may reasonably suspect, it was owing to this accident.
he says, Sir Isaac constantly went to church on Sundays, to Saint Marys: tho' not always to the college chapel; in mornings he was up at study. he seldom went to the
