34 



ORDER LONGIPENNES— LONG-WINGED SWIMMERS. 

 Larid;e — Gulls, Terns, etc. 



547. Larus argentatus, Brunn. Herring Gull, Commou Gull, c. 



554. " atricilla, Lina. Laughing or Black-bead Gull, r. (only one speci- 



men shot.) 



555. " Franklinii, Rich. Bonaparte's Gull. 



ORDER PYGOPODES— DIVING BIRDS. 

 ColymbidtE — Loons. 

 605. Cohjmbus torquatiis, Brunn. Great Northern Diver, Loon, c. 

 PoDiciPiD.E — Grebes. 



008. Podiceps occidentalis. Law. AVestern Grehe r. (a pair shot at the mouth 



of the North Nation River. Unfortu- 

 nately the skins cannot now be produced, 

 but there is no doubt as to their identity.) 



609. " cristatHS, Latham. Crested Grebe, c. 



611. " cornutus, Latham. Horned Grebe, r. 



614. Podihjmbus podiceps, Law. Pied-billed Grebe, Dab-chick, Dipper, c. 



From the above List it will be seen that 109 species of birds, belonging to 

 120 genera and 39 families, have so far been found in the vicinity of the City of 

 Ottawa. Many names, however, will probably be added to the List in ensuing 

 seasons. 



SECOND SOIEEE. 



Friday, December 9Tn, 1881. On the Geology of the Ottawa Pal.eozoic Basin- 

 BY Alfred K. C. Selwyn, LL.D., F.R.S. 



Having undertaken to say a few words, this evening, on the Geology of the 

 country around Ottawa, I must preface these by stating that, never having myself 

 more than locally and superficially examined the district, I can do little more 

 than lay before you the results, so far as I understand them, of the investigations 

 of others, and chiefly of those of my predecessor, Sir W. E. Logan, as described 

 in the Geology of Canada, and as depicted on the Maps exhibited, and which are 

 further illustrated by the collection now being arranged and exposed in the 

 Geological Museum. 



Though the Geology of Canada is accessible in a large number of the libraries 

 of the colleges, schools, and public institutions of Canada, it is unfortunately now 

 very difficult to obtain, and a new and enlarged edition is much needed. Whether 

 regarded from an economic or from a scientific standpoint, this great work of Sir 

 W. Logan and his colleagues must be considered a priceless gift to Canadian 

 Geologists. Apart from theoretical deductions relating to structure, some of 

 which will require to be changed or modified to accord with the result of more 

 extended investigation, and our consequent more detailed knowledge of facts, it 

 contains a mass of information, scientific and practical, which, however much 

 future researches may enable us to supplement it, will always remain as a solid 

 foundation on which the superstructure of Canadian geology must be built by 



