16 PROCEEDINGS OF THE CANADIAN INSTITUTE. 



dulatory theory of light, and pointed out the difficulties in the way 

 of its final acceptance. 



In answer to a remark from Mr. Richardson, Mr. Clark said, the 

 ether being a cause sufficient to explain all the phenomena, and, 

 there being no known facts inconsistent with it, there was there- 

 fore sufficient proof of its existence. 



The President, in answer to a question respecting the impenetra- 

 bility of atoms, said, he did not know of any proof that they were 

 impenetrable. It had often occured to him that the different 

 chemical forms of the same substance may be combinations of the 

 same element with ether. 



In refei-ence to the opinion that the mass of the ether moved, he 

 supposed that it was not improbable that the ether permeated the 

 masses of bodies. 



ELEVENTH MEETING. 



Eleventh Meeting, 26th January, 1889, the President in the 

 chair. 



Donations and exchanges since last meeting, 42. 



Dr. Otto Hahn and Dr. Hugo Toeppcn were elected 

 members. 



A letter was read from the Secretary of the Philological 

 Section announcing the resignation of Dr. McCurdy and the 

 election in his stead of D. R. Keys, B.A., as Chairman of that 

 Section. 



A communication was read from the Royal Academy of 

 Sciences of Turin offering a prize to the scientific author or 

 inventor, whatever be his nationality, who before the end of 

 December, 1890, shall, according to the judgment of that 

 academy, have made the most important and useful discovery, 

 or published the most valuable work in physical and experi- 



