Mr Hardy, On the influence of Electrons, etc. 201 



On the influence of Electrons on Colloidal solutions. By Mr 

 W. B. Hardy. 



[Read 18 May 1903.] 



Specially purified globulin from blood was dissolved (a) in a 

 trace of acetic acid, (b) in a trace of sodium hydrate. In presence 

 of acetic acid the globulin was found to move in an electric field 

 from anode to cathode, in presence of alkali it moved from cathode 

 to anode. In the former case therefore the globulin particles 

 carried a positive charge, in the latter a negative charge. These 

 two solutions were exposed to the radiations from radium bromide 

 and it was found that the electro-negative solution of globulin 

 was turned into an opaque jelly in 3 minutes, while the electro- 

 positive solution became more mobile and less opalescent. 



