[While William Harvey may have read Warner's manuscript treatise about the circulation of the blood, it is obvious that Warner's views were based on the current knowledge of the period, correct in certain details, but ignorant of the implications of the whole. Professor Rolleston said in the Harveian Oration of 1873: What was left for Harvey to discover was nothing less than the circulation itself. His predecessors had but impinged, and that by guesswork, upon different segments of the circle, and then gone off at a tangent into outer darkness, whilst he worked and proved and demonstrated round its entire periphery. Warner died in 1640.]
THIS Walter Warner was both Mathematician and Philosopher, and 'twas he that putt-out Thomas Hariot's Algebra, though he mentions it not.
Walter had but one hand (borne so): Dr. John Pell thinks a right hand; his mother was frighted, which caused this deformity, so that instead of a left hand, he had only a Stump with five warts upon it, instead of a hand and fingers. He wore a cuffe on it like a pockett. The Doctor never sawe his stump, but Mr. Warner's man told him so.
This account I received from Mr. Isaac Walton: this is his owne hand writing--Mr. Warner did long and constantly lodg nere the Water-stares or market in Woolstable (Woolstable is a place or lane not far from Charing Crosse, and nerer to Northumberland howse). My Lord of Winchester tells me he knew him, and that he saide he first fownd out the cerculation of the blood, and discover'd it to Do' Harvie (who said that 'twas he (himselfe) that found it) for which he is so memorably famose.
Mr. Warner did tell Dr. Pell, that when Dr. Harvey came out with his Circulation of the Blood, he did wonder whence Dr. Harvey had it: but comeing one day to the Earle of Leicester, he found Dr. Harvey in the Hall, talking very familiarly with Mr. Prothero, to whom Mr. Warner had discoursed concerning this Exercitation of his De Circulatione Sanguinis, and made no question but Dr. Harvey had his Hint from Prothero. Dr. Pell sayes that Mr. Warner rationated demonstratively by Beates of the Pulses that there must be a Circulation of the Blood.