1902] Ami Map of Ottawa District. 187 



BRIEF DESCRIPTION OF THE MAP OF THE "OTTAWA 



DISTRICT." 



By H. M. Ami. 



An uncoloured copy ot the " Geological Map of the City of 

 Ottawa and Vicinity," prepared by the Geological Survey of 

 Canada, and recently issued by that department of the Govern- 

 ment service to illustrate Dr. Ells's report, has been sent to every 

 Canadian member of the Ottawa Field-Naturalists' Club. The 

 scale ot the map is one mile to the inch. It comprises an area of 

 some 450 square miles with Ottawa as centre. The Ottawa 

 River divides the district into two practically equal parts, the 

 northern half of which is intersected by the Gatineau and Blanche 

 Rivers, whilst the southern half is divided into two sub-equal 

 portions by the Rideau River and Canal of the same name. 



The map was prepared from surveys made specially for the 

 purpose by Messrs. Scott Barlow, James White, R. W. Ells, W. 

 J. Wilson, and other members of the Geological Survey staff, also 

 from plans of the Department of Railways and Canals, and of 

 Crown Lands of Ontario and Quebec. The geological boundaries 

 were laid down from geological and palaeontological surveys by 

 Dr. Ells and the writer. The different lines of railways coming 

 into the city from the north, south, east and west are all 

 indicated, likewise the various electric roads, and all the roads 

 surveyed up to the date of issue. 



The various islands, light-houses, points, and other features 

 along the channel of the Ottawa from Eardley township to 

 L'Ange-Gardien in Buckingham township are also indicated. 



On the Ontario side of the Ottawa, the map includes portions 

 of the townships of March, Goulburn, Nepean, Gloucester, 

 Osgoodesnd Cumberland, and the Ontario shores represented on 

 the map extend from a point three miles northwest of Shirley Bay 

 to a point two miles east of Danniston post office in the township 

 of Cumberland. 



The geological boundaries are indicated by more or less 

 sinuous and finely dotted lines, and any scale of colours could be 

 adopted by the possessor of the map, were it his or her wish to 



