applied in the examination of Tydes, 17. [300].
An Instrument for graduating Thermometers, to make them Standards of heat and cold, 2. [31].
A new Engine for grinding any Optick Glasses of a Sphærical figure, 2. [31].
To measure the Refractions of Liquors of all kinds, for establishing the Laws of Refraction, 2. [32].
To break the hardest Rocks in Mines, 5. [82].
To try for fresh waters at the bottom of the Seas, 9. [147].
To find the greatest depths in the Sea, 9. [147].
The Engin for fetching up fresh water defended by Explication, 13. [228].
Huge Wheels, and other Engins for Mines, 2. [23].
By the fall of water to blow wind, as with Bellows, 2. [25].