Page:History of the Royal Society.djvu/274

 Several very accurate Beams, for trying many Statical Experiments, and for finding the most exact gravity of several kinds of Bodies.

A great number of Magnetical Instruments, for making Experiments about Loadstones.

Several new kinds of Levels, for finding the true Horizon, where, by one of not above a foot length, the Horizontal line may be found, without the error of many seconds.

A new kind of Augar, for boring the ground, and fetching up whatever it meets with in the right order.

A new Instrument, for fetching up any Substance from the bottom of the Sea, whether Sand, Shells, Clay, Stones, Minerals, Metals.

A new Bucket, for examining and fetching up whatever Water is to be found at the bottom of the Sea, or at any depth, and for bringing it up without mixing with the other Water of the Sea, through which it passes.

Two new ways of sounding the depth of the Sea without a Line, for examining the greatest depth of the Ocean, in those parts of it, that are most remote from the Land.

Several Instruments for finding the velocity of swimming Bodies of several Figures, and mov'd with divers strengths, and for trying what Figures are least apt to be overturn'd, in order to the making a true Theory, of the Forms of Ships, and Boats for all uses.

An Instrument of great height, with Glass windows on the sides, to be fill'd with Water, for examining the velocity of Bodies of several Substances, Figures and Magnitudes, by their descent.

Rh