[251] That is to say, the haematopoietic function deserves consideration as much as the digestive processes which precede it. [252] _i.e._ Erasistratus could obviously say nothing about any of the humours or their origins, since he had not postulated the four qualities (particularly the Warm--that is, innate heat). [253] _i.e._ bile. [254] _i.e._ deprived of its bile. [255] Here it is rather the living organism we consider than the particular food that is put into it. [256] Supreme importance of the "soil." _cf._ Introduction, pp. xii. and xxxi. [257] Aristotle, _Hist. Animal._, iii. xix.; Plato, _Timaeus_, 80 E. [258] Philotimus succeeded Diocles and Praxagoras, who were successive leaders of the Hippocratic school. _cf._ p. 51, note 1 (83). [259] Lit. _phenomena_. [260] _i.e._ living organisms; _cf._ p. 47, note 1 (75). [261] Erasistratus rejected the idea of innate heat; he held that the heat of the body was introduced from outside. [262] As a _bubo_ is a swelling in the groin, we must suppose that the wound referred to would be in the leg or lower abdomen. [263] _i.e._ fever as a _cause_ of disease. [264] As we should say, "circulatory" changes. [265] This is the "vital spirit" or pneuma which, according to Erasistratus and the Pneumatist school, was elaborated in the left ventricle, and thereafter carried by the arteries all over the body, there to subserve circulatory processes. It has some analogy with oxygen, but this is also the case with the "_natural_ spirit" or pneuma, whose seat was the liver and which was distributed by the _veins_ through the body; it presided over the more _vegetative_ processes. _cf._ p. 152, note 1 (215); Introduction, p. xxxiv. [266] Even leaving the pneuma out of account, Galen claims that he can still prove his thesis. [267] In other words: if _dyscrasia_ is a first principle in _pathology_, then _eucrasia_ must be a first principle in _physiology_. [268] The above is a good instance of Galen's "logical" method as applied to medical questions; an appeal to those who are capable of following "logical sequence." _cf._ p. 209, note 1 (288). [269] The aim of dietetics always being the production of moderate heat--_i.e._ blood. [270] Note contrasted methods of Rationalists and Empiricists. [271] Lit. _anaesthesia_. Linacre renders it _indocilitas_. [272] p. 15. [273] _Iatros_: lit. "healer." [274] Lit. "physicist" or "physiologist," the student of the _physis_. _cf._ p. 70, note 2 (114). [275] That is, a _blending_ of the four principles in their natural proportion; Lat. _temperies_. Dyscrasia = _intemperies_, "distemper."