An accompt of two books. I. Tracts, written by R. Boyle Esquire, containing new experiments touching the relation betwixt flame and air, and about explosions: An hydrostatical discourse, occasioned by some objections of Dr. Henry More, &c; To which is annex't an hysrostatical letter, about a way of weighing water in water; of the air's spring on bodies under water; and about the differing pressure of heavy solids and fluids. In which accompt is occasionally inserted the publisher's reply to Mr

An accompt of two books. I. Tracts, written by R. Boyle Esquire, containing new experiments touching the relation betwixt flame and air, and about explosions: An hydrostatical discourse, occasioned by some objections of Dr. Henry More, &c; To which is annex’t an hysrostatical letter, about a way of weighing water in water; of the air's spring on bodies under water; and about the differing pressure of heavy solids and fluids. In which accompt is occasionally inserted the publisher's reply to Mr. George Sinclair's paper, called a vindication of the preface of his Ars Nova & Magna Gravitatis & Levitatis. II. Experienze intorno à diverse cose naturali, fatte da Francesco Redi. In the first of the Tracts, which contains the <italic>New Experiments</italic> about the <italic>Relation betwixt Flame</italic> and <italic>Air</italic>, the Noble Author, after he had mentioned some of the chief difficulties, both in <italic>making</italic> and <italic>judging</italic> of these Experiments, and occurred also to some thoughts, that might arise in the Reader, about his not ascribing in these Narratives so absolute and equal a necessity of the <italic>Air</italic> to the production and conservation of all <italic>Flames</italic>, as divers Men have concluded from his former Experiments; after this, <italic>Isay</italic>, he divides this Discourse into three parts.