[_A Coach-saving Engine._] We have two other readings of this article; the first is the 5th article in his list of a portion of his Inventions, (see Appendix A.) as follows:--“By this (his quintessence of motion) I can make a child, in a coach, to stop the horses (running away), and shall be able to secure himself, and those that be in the coach; having a little engine placed therein, which shall not be perceived, in what posture soever the horses draw. A child’s force shall be able to disengage them, from overturning the coach, or prejudicing anybody in it.” The second reading is in his patent of 1661, (see Appendix B.) wherein he offers:--“To make an engine applicable to any coach, by which a child of six years old may secure from danger all in the coach, and even the coachman himself, though the horses become never so unruly, the child being able in the twinkling of an eye to loosen them from the coach, in what posture soever they draw or turn, be it ever so short, or to either hand.” By means of a T-ended lever, two or four bolts could be simultaneously drawn inwards, and the horses thereby released with the greatest possible ease and certainty. 20. How to bring up water Balance-wise, so that as little weight or force as will turn a Balance will be onely needful, more then the weight of the water within the Buckets, which counterpoised[2] empty themselves one into the other, the uppermost yielding its water (how great a quantity soever it holds) at the self[3]- same time the lower-most taketh it in, though it be an hundred fathom high. Footnotes [2] counterpoise, and empty. MS. and P. [3] self--omitted. P. [_A Balance Water-work._] It is to be regretted that we have nothing at present to aid us in offering a description at all approaching the singular construction of this hydraulic machine. There are some curious designs given in the description of M. Grollier de Servière’s cabinet, 1719, but we have never seen any plan fully realizing the effect above indicated. 21. How to raise water constantly with two Buckets onely day and night, without any other force then its own motion, using not so much as any force, wheel, or sucker, nor more pullies then one, on which the cord or chain rolleth with a Bucket fastened at each end. This, I confess,[4] I have seen and learned[5] of the great Mathematician _Claudius_[6] [7] his studies at _Rome_, he having made a Present thereof unto a Cardinal; and I desire not to own any other mens[8] inventions, but if I set down any, to nominate likewise the inventor. Footnotes [4] confess to have seen. [5] in the great Mathematician’s study, Clauius at Rome. [6] Clauius. [7] Clavius’s Studies at Rome. P. [8] man’s. MS. and P.