632 COMPARATIVE ELECTRO-PHYSIOLOGY 



from living tissues, animal and vegetal, and from inorganic 

 bodies. As the methods also, by which these records were 



FIG. 389. Photographic Record ot Abnormal Response of Tungsten to 

 Electric Radiation, converted after Tetanisation into Diphasic and Normal 



obtained, were so different as those of the mechanical, the 

 electro-motive, the resistivity and the magnetic variations, it 



FIG. 390. Moderate Normal Response of Aluminium, enhanced after 

 Tetanisation 



follows that their similarities under parallel circumstances 

 can only be due to certain fundamental molecular reactions, 

 which are common to all alike. Further, since some of th 



