Note 843 — Chapter V · (continued 3)

‘Such, however, is, at the same time, the nature of the animal economy, that this debility proves an indirect stimulus to the sanguiferous system; whence, by the intervention of the cold stage and spasm connected with it, the action of the heart and larger arteries is increased, and continues so till it has had the effect of restoring the energy of the brain, of extending this energy to the extreme vessels, of restoring, therefore, their action, and thereby especially overcoming the spasm affecting them; upon the removing of which, the excretion of sweat, and other marks of the relaxation of excretories, take place.’ Practice of Physic, in Cullen's Works, vol. i. pp. 501, 502. See also p. 636, § cciii. Or, as he elsewhere expresses himself (vol. i. p. 561): ‘With regard to the event of fevers, this is the fundamental principle: in fevers, nature cures the disease; that is, certain motions tending to death continue the disease, but, in consequence of the laws of the animal economy, other motions are excited by these which have a tendency to remove it.’