Witherings, Mr. Wm. Wellington, Shropshire Wade, Mr. Officer of Excife, Chalfont St. Peters Bucks Wilfon, Mr. Samuel, Mercer, Glocefter Webb, Mr. Nicholas, fenior, ditto Ward, Mr. Thomas, Henwicks-Hill, Worcester Weft, Mr John, Draper, ditto Wickins, Mr. Thomas, Glover, ditto Walden, Mr. Thomas, ditto Watkins, Mr. Thomas, Attorney, ditto Watson, Mr. Jofeph, ditto Wareing, Mr. Thomas, ditto Wright, Mr. John, Portrait Painter, Salop. I F the Name of any Perfon, who has favoured this Publication with his Subfcription, be not found in the preceding Lift, the Author begs that fuch Omiffion may not be imputed to any wil ful neglect, and hopes fuch Perfon will be pleased to affift his recollection by a line, that the Book may be deliver'd at the fubfcribing Price of Five Shillings, which is one Shilling less than it will be fold at to Non-fubfcribers. The Author alfo hopes for his Subfcribers' Pardon, if he has fallen into any errors with refpect to their Titles, Places of abode, or manner of spelling their names, in which laft article it is fcarce poffible for any one not to be fometimes miftaken, who has not had particular inftructions from the Subscribers themselves. CON CONTENTS Chap. II. Sir Ifaac Newton's Rules of Reafon- ing in Philofophy. And, the Author's first Chap. III. Experiments, which fhew, that the Electrical Fluid is endued with the two inhe- rent or effential Properties of Ether, and in moft furprising degree, namely, those of extreme 153 Chap. V. Farther accounts of the wonderful effential Properties of Ether, Chap. VI. Lord Verulam's Conjectures concern ing a fubtile Fluid, with the Author's new ac- count of a more rare and active part of Ether to which he gives the name of Pneuma or Spi- Chap. VII. Mr. Haukefbee's Experiments con- tinued, with others, tending to point out the Chap. VIII. Of the fource from whence this fub- tile matter is obtained in the Experiments, 98 Chap. IX. On electrical and non-electrical bo- Chap. X. Concerning the fimilarity of electrical Fire and the Fire of Lightning; and of elec- trifing plus and minus: With Remarks on deftroyed and restored equilibriums. Chap. XI. A description of the Conftruction and 121 Chap. XIII. The fallibility of the greatest Phi- lofophers, and imperfection of all human Know- Chap. XIV. The use of pointed iron Rods to preferve high Buildings, Ships, &c. from Lightning. Dr. Franklin's pafteboard Tube, Chap. XV. Particular accounts of the electrical Chap. II. Account of Fire continued; Pain phyfically defcribed, 185 Chap. III. The Opinion of the Ancients concerning Fire, adopted by Bishop Berkeley, and confirmed by Modern Experiments, 197 Chap. IV. Fire not a Quality, but a' created 209 Chap. V. A new and brief Theory of the Office of the Sun; with Remarks on Motion, 231 Chap. VI. Oppofites, a principal Caufe of very confiderable Operations of Nature. Account of the Freezing of Quickfilver, PART the THIRD. 245 Chap. I. Being a new Plan of Philofophy, founded on the late difcover'd Subtile Medium, and countenanced by the Authority of a very ingenious modern Author, 257 Chap. II. Abstract of Mr. Jones' Effay, 263 Chap. III. Abstract of Mr. Jones' Elay continued, Chap. IV. Mr. Jones' Animadverfions on the Doctrine of a Vacuum, and the vis inertia of Matter, 272 287 Chap. V. The Doctrine of Refiftances confidered, and other Arguments for a Vacuum examined and refuted, 299 Chap. VI. Animadverfions on Mr. Barrow's Ac 1 Chap. VII. The Opinion of Sir Ifaac Newton, and of fome of the most eminent of his Followers, relating to Attraction and Gravity, confider'd Chap. VIII. An Examination of the Queftion, whether Attraction be a Caufe or an Effect, Chap. IX. Attraction, a material force in the Fudgement of fome Authors; an immaterial force in the Judgement of others; and fome- times both one and the other in the Judgement Chap. X. The Attraction of Gravity, understood as an univerfal property or quality in the parts of Matter, bath received no proof from Geo- Chap. XI. A Specimen of Dr. Hales' Method of converting grofs Bodies into Air by means of Diftillation, &c.—with fome Remarks of the Chap. XII. The Author's Account of the Effects Chap. XIV. A Summary of Mr. Jones' Efay, 411 |