i88 The Ottawa Naturalist. [December 



colour the same as a g^eolog-ical map. Besides indicating the 

 outcrop of the Archaean crystallines to the north of Ottawa, the 

 g-eolog-ical map gives the latest and most accurate information 

 regarding the extent and distribution of the following Palaeozoic 

 formations in ascending order : Potsdam, Calciferous (or Beek- 

 mantown formation of the New York geologists), Chazy, (both 

 the lower shales and upper limestones), the Black River, Trenton, 

 Utica, Lorraine and Medina. Single copies of the geo- 

 logically coloured map, however, can be obtained from the 

 leading booksellers at Ottawa : Hope & Sons, Ogilvy, and 

 Thorburn, or from the Librarian of the Geological Survey of 

 Canada, for the nominal sum often cents. 



Among the principal features indicated are the location of the 

 iron, apatite (phosphate of lime), mica, barytes and other mines of 

 the Ottawa district, besides quarries and brick-yards. The 

 heights or elevation of a number of points, above sea-level, is also 

 indicated. The bore-holes put down for water, oil, gas, salt, etc., 

 at different times in the district, together with the depth reached 

 are likewise inserted. 



The leading post offices and railroad stations indicated on 

 the map, and the roads leading to them include the following : 



In Ontario : Billings's Bridge, Merrivale, Chaudi6re Junction, 

 Bowesville, Gloucester Station, Rideau View, South Gloucester, 

 Leitrim, Hurdman's Bridge, Hawthorn, Ramsay's Corners, 

 Piperville, Edwards's Station, Eastman's Springs, Borrom^e, 

 Blackburn Station, Blackburn P. O., Cyrville, Robillard, Orleans, 

 Danniston, Notre Dame de Lourdes, Janeville, Cummings's 

 Bridge, ClarKstown, Gateville, Harbord P. O., Bayswater, 

 Hintonburgh, Mechanicsville, McLeanville, Skeads, We^tboro', 

 Britannia Station and Village, Bell's Corners, City View, 

 Hazeldean, South March Station and post office. 



In Quebec : Hull, T^treauville, Aylmer, Kingsmere, Old 

 Chelsea, Chelsea, Kirk's Ferry, Gatineau Station and Village, 

 Ironsides, Wrightville, Ste. Rose de Lima, East Templeton 

 Station, Quinville, Cantley, Cousineau, L'Ange-Gardien Station 

 and Village of Angers. 



The Mer Bleue or Peat Bog to the east of the city is also 

 indicated, whilst Meach's Lake, Kingsmere and other smalle 



