442 THE CANADIAN NATURALIST. [Dec. 



The following are the titles of the papers, and the datos at 

 which they were read. 



March, 1865. — On the structure of inscclS; illustrated by 

 microscopical preparations. 



March, 1866.— On the ''Walking Stick" Insect, Spectrum 

 femoratum. 



Nov. 1868.— On the Beetles of the Island of Montreal. 



Oct. 1869. — On the White Cabbage Butterfly, Pleris rapoe. 



Feb. 1870. — Why are insects attracted to Artificial lights. 



April 1870. — Aquaria Studies, No. 1. 



Oct. 1870.— do do No. 2. 



His favourite study was entomology, and this he pursued in a 

 philosophic spirit, studying the habits of insects in their native 

 haunts by day, and examining the details of their anatomy 

 under the microscope at night. He was also well acquainted 

 with other departments of Zoology, especially with the infusoria. 

 A little before his decease he was preparing a lecture, " On the 

 Inhabitants of a drop of water " for the young men connected 

 with Erskine Church, and for this Society, a paper on a curi- 

 ous ichneumon parasite of the white cabbage butterfly. He died 

 on the 13th December, 1870, at the early age of 34. 



Rev. A. De Sola, LL.D., spoke of Mr. Ritchie, as a most 

 enthusiastic member who had devoted all his spare time to the 

 study of science, which it would be to the advantage of business 

 men to cultivate, and he trusted that many others would follow 

 his example. He moved the following resolution which was una- 

 nimously adopted. 



Moved by Rev. Dr. De Sola, seconded by Mr. J. Ferrier, 

 and 



Resolved — That this Society would desire to express its sincere 

 sympathy with the widow of the late Alexander S. Ritchie, Esq., 

 in her bereavement, and also thus publicly to state their high esti- 

 mation of the value of the services of Mr. Ritchie to the Society 

 as one of its most indefatigable members, and a contributor of 

 interesting and valuable papers to its meetings and journal, and 

 more recently as the chairman of its Council. 



That this resolution be published in the proceedings of the So- 

 ciety, and communicated by the Secretary to Mrs. Ritchie. 



Mr. Whiteaves announced the following among the recent 

 donations to the Museum : 



