C X38 ) 
t<ricle of the Heart oppofing its return into the Veins, 
and the Semiluoary Valves of Arteria Pulmonalis and 
Aorta preventing its ingrefs into the Ventricles* are fuf^ 
ficient (when rightly confidered) to demonftrate the ne- 
ceflity of a Circulation of this grand Fluid called Blood. 
Thus Sanguification is begun, and as we have mentioned 
the divers preparations of the Aliment, before Chyli- 
fication, fo here inay be obferved the various Mixtures 
and Preparations of Chyle in order to Sanguification, 
which he fhall leave for a more difcerning Eye to pro- 
.fccute. 
V. A 
