19111 The Ottawa Naturalist. 9 



On Entomology. 

 i. "House-Flies and the Public Health." C. Gordon Hewitt. 



2. "The Imperial Moth." Arthur Gibson. 



3. "Notes on Euxoa detersa Wlk. and E. personata Morr." 



John B. Smith. 



4. "The Migration of Some Native Locusts." Norman Criddle. 



On Geology. 



1. "On Two New Trilobites from' the 'Chazy' River Near 



Ottawa." Percy E. Raymond. 



2. "Note on the Parietal Crest of Centrosaurus apertus and a 



Proposed New Generic Name for Stereocephalus 

 tretus." L. M. Lambe. 



3. "Preliminary Notes on the 'Chazy ' Formation in the Vicinity 



of Ottawa." Percy E. Raymond. 



On Ornithology. 



1. "Stomach Contents of Some Canadian Birds." C. W. G. 



Eifrig. 



2. "Winter Birds at Point Pelee, Ont." W. E. Saunders. 



3. "Notes on the White-throated Sparrow." L. Mel. Terrill. 



4. "A Colony of Cliff Swallows and Others." Norman Criddle. 



5. "The Birds of Ottawa." C. W. G. Eifrig. 



This latter paper appeared in the December, January, 

 Februarv and March issues, and is an exceedingly valuable list 

 of the Birds of the Ottawa district. 



On Zoology. 

 1. "A Weasel's Home." S. E. Percival. 



Excursions Committee. 

 The usual series of excursions, to the number of 13, was 

 arranged for the spring and fall months. Nearly all were to 

 localities often visited in the past, and chosen because of their 

 all-round natural history features. The aim was to make them 

 instructive and attractive to the non-scientifically trained 

 members of the Club, as well as profitable to those who are able 

 to do valuable original field work in any of the departments of 

 the Club's activities. Enthusiastic leaders were always present 

 to contribute to the success of these outings, and while some of 

 the excursions were fairly well attended, it is, nevertheless, a 

 regrettable fact that far too few of the members availed 

 themselves of the splendid opportunities thus afforded for study- 

 ing the plants, animals, rocks, etc., at first hand, and for partaking 

 of the refreshing pleasure of an afternoon in the open country. 

 For many of us these are the best and almost the only occasions 

 when field study is possible. 



