REPRESENTATIVE LAMARCKIANS 269 



scales of magnitude simultaneously." Our informa- 

 tion as to colloids, scanty as it is at present, proves that 

 the chemical reactions taking place in them are able 

 to influence the colloidal state, and that reciprocally 

 4 'if direct action influences the colloidal state, chem- 

 ical variations may result from it, that is, molecular 

 reactions between the particles in suspension and the 

 solvent." 



If we proceed further, we now observe "after phe- 

 nomena taking place along the colloidal scale of mag- 

 nitude, those phenomena which take place along the 

 anatomical scale" (phenomena generally visible in ani- 

 mal life, such as motions). 



Phenomena taking place in those three scales can 

 react uf)on one another. For instance, "colloidal ac- 

 tivity can be indirectly influenced by external phe- 

 nomena, which, according to their scale of magnitude 

 would, if acting directly, only influence the chemical 

 activities; colloidal variations, however, influence 

 chemical activities, and reciprocally, external phenom- 

 ena acting directly upon chemical phenomena, can 

 indirectly influence colloidal activities." 



On the other hand "animal activities can, through 

 the colloidal mechanism of protoplasms, modify the 

 chemical equilibrium of their constitutive elements." n 



In other words, a modification produced in an ani- 

 mal by its use of a certain organ, could influence its 



11 EUments de Philosophic Biologique, pp. 29-30. 



