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Ejection began to be made, did, either really, or craftily, fall into aSwoon ; whereby, being unwilling to prosecute so hazardous an Experiment,they deli lied, without seeing any other Effect of it, save that it was told theAmbassador, that it wrought once downwards with him. Since whichTine, it hath been frequently practised both in Oxford and London ; as wellbefore the Royal Society , as elsewhere. And particularly that learned PhyfiC) an Dr. Timothy Clark , hath made it part of his Business, to pursue thoseExperiments with much Industry, great Accuratenefs, and considerable Ob~fervations thereon ; which above two Years since were produce! by him, andre ad before the Royal Society, who thereupon desir’d him, as one of theirMembers, to compleat what he had propos’d to himself upon that Subject,a nd then to publish the same; the Effect whereof ’tis hoped, will nowPortly appear, and not prove unwelcome to the Curious.

Some whereof, though they may conceive, that Liquors thus injected intoEeins without Preparation and Digestion, will make odd Commotions in theElood, disturb Nature, and cause strange Symptoms in the Body; yet they haveother Thoughts of Liquors, that are prepar’d of such Things as have pass’dthe Digestion of the Stomach; for Example, of the Spirit of Urine, ofTarts-horn, of Blood, &c. And they hope likewise, that besides the medicalEsses, that may be made of this Invention, it may also serve for anatomicallurposes, by filling after this Way, the Vessels of an Animal as full as theycan hold, and by exceedingly distending them, discover new Vessels, &c. ButHot now to enlarge upon the Uses, the Reader may securely take this Nar-rative, as the naked, real, Matter of Fact, whereby ’tis as clear, as Noon-day, both from the Time, and irrefragable Testimony of very many con-siderable Persons in that University, who can jointly attest it; as well asfrom that particular unquestionable one of Mr. Boyle, and his worthyCompany, who were the first Eye-Witnesses of the Trials made, that toOxford, and in it, to Dr. Chris opher Wren, this Invention is due; and conse-quently that all others, who discourse or write of it, do either derive it fromHim, or are fallen upon the same Devise several Years after him.

Mr. Boyle s Account of the ahove-mentiotid Invention, and

the Experiments thereon.

T O enable you (Pyrophilus) to gratify those inquisitive Persons that have Eja yt of„ at .

heard some, and yet but an imperfect Report of a much nois’d Ex- e *P^-Percent, that was some Years ago devis’d at Oxford, and since try’d in other Postscript, of‘Eces, before very illustrious Spectators; I am content to take the Occasion sord > i 65 3-afforded me, by what was in the foregoing Essay lately mention’d concern-ing the Application of Poisons, to inform you, That a pretty while after thek siting of that Essay, I happen’d to have some Discourse about Matters ofjbe like Nature, with those excellent Mathematicians, Dr. f. Wilkins, andyE. Christopher Wren ; at which the Latter of those Virtuosi told us, thate thought, he could easily contrive a Way to convey any liquid Poison im-mediately into the Mass of Blood. Whereupon our Knowledge of hisex traordinary Sagacity, making us very desirous to try what he propos’d, IProvided a large Dog, on which he made his Experiments in the Presence andNth the Assistance of some eminent Physicians, and other learned Men : histJ a y (which is much better learn’d by Sight than Relation) was briefly this:j r st, to make a small and opportune Incision over that Part of the hindjq e g. where the larger Vessels that carry the Blood, are most easy to be takenHold of: then to make a Ligature upon those Vessels, and to apply a cer-tain

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