7 (34) 



34 LOMBARD, J. S., New York Medical Journal, v, 198, June, 1867. 

 [A part of these facts were communicated to me directly by th_> 

 discoverer.] 



35 WOOD, L. H., On the influence of Mental activity on the Ex- 

 cretion of Phosphoric acid by the Kidneys. Proceedings Connec- 

 ticut Medical Society for 1869, p. 197. 



36 On this question of vital force, see LIEBIG, Animal Chemistry. 

 "The increase of mass in a plant is determined by the occurrence 

 of a decomposition which takes place in certain parts of the plant 

 under the influence of light and heat." 



" The modern science of Physiology has left the track of Aristotle. 

 To the eternal advantage of science, and to the benefit of mankind 

 it no longer invents a horror vacui^ a quinta essentia^ in order to fur- 

 nish credulous hearers with solutions and explanations of phenom- 

 ena, whose true connection with others, whose ultimate cause is still 

 unknown." 



" All the parts of the animal body are produced from a peculiar 

 fluid circulating in its organism, by virtue of an influence residing 

 in every cell, in every organ, or part of an organ." 



" Physiology has sufficiently decisive grounds for the opinion that 

 every motion, every manifestation of force, is the result of a trans- 

 formation of the structure or of its substance ; that every concep- 

 tion, every mental affection, is followed by changes in the chemical 

 nature of the secreted fluids ; that every thought, every sensation 

 is accompanied by a change in the composition of the substance of 

 the brain." 



"All vital activity arises from the mutual action of the oxygen of 

 the atmosphere and the elements of the food." 



" As, in the closed galvanic circuit, in consequence of certain 

 changes which an inorganic body, a metal, undergoes when placed 

 in contact with an acid, a certain something becomes cognizable by 

 our senses, which we call a current of electricity ; so in the animal 

 body, in consequence of transformations and changes undergone by 

 matter previously constituting a part of the organism, certain phe- 

 nomena of motion and activity are perceived, and these we call life, 

 or vitality." 



" In the animal body we recognize as the ultimate cause of all 



