Ancient and Modern Learning.
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found that Course which, in our Age, Dr. Harvey first clearly demonstrated, will appear evident from the following Considerations: (1.) He says nothing of the Circulation of the Blood(x) De Corde, §. 4. in his Discourse of the Heart, where he Anatomizes it as well as he could; and speaks of (x) the Ventricles, and the Valves (y)(y) Ibid. §. 7, 8., which are the immediate Instruments by which the Work is done. (2.) He believes that the Auricles of the Heart (z) are like Bellows, which receive the Air to cool the Heart. Now there are other Uses of them certainly known,(z) Ib. §. 6. since they assist the Heart in the Receiving of the Blood from the Vena Cava, and the Vena Pulmonaris.(a) Ateriæ quidem purum sanguinem & spiritum à corde recipiunt; Venæ autem & ipsæ à corde sanguinem sumunt, per quas corpori distribuitur; De Structura Hominis, §. 2. This cannot be unknown to any Man that knows how the Blood circulates; and accordingly, would have been mentioned by Hippocrates, had he known of it. (3.) Hippocrates speaks of Veins (a), as receiving Blood from the Heart, and going from it: Which also was the constant Way of Speaking of Galen, and all the Ancients. Now, no Man that can express himself properly, will ever say, That any Liquors are carried away from any Cistern, as from a Fountain or Source, through those Canals which,
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