Spirits, animal 122 



Spirits in blood I2 



Spirits, natural 77 



Spirits, vital 20 



Spleen "3 



Stannius, H 40 



Stensen, N. 3° 



Stokes 40 



Stroke-volume of heart 7^ 



Swallowing, Harvey's description of ... . 48 



Sydenham, T 37 



Sylvius, J 96,97 



Systole of heart 3^ 



Terrence 26 



Translator's postcript ^35 



Tricuspid valves I2I 



Umbilical vein m 



Valves in veins 9° 



Valves in veins, experiments on 100 



Valves in veins, function of 99 



Valves of the heart 18 



Valves of the heart, Galen's view on ... . 63 



Vena arteriosa 128, 130 



Venous pressure 41 > 86, 124 



Vesalius, Andreas 3^ 



Vital spirits 20 



Waste-vapors (fuligines) 8 



Weber, E.H 3^ 



Willis, R "^3^ 



[154] 



