oo General Notes. [ January, 
Hayden, F. V., Holmes, W. H., Peale, A. C-—Ditto. Part 11. Yellowstone National 4 
Park. 
Hayden, F. V—-Maps and Panoramas of Twelfth Ania Report U. S. Geol. and 
Geog. Surv. Washington, 1883. From the departm 
Calvin, S—On the fauna found at Lime creek, Iowa. eh Amer. Jour. Science. 
From the author. 
GENERAL NOTES. 
GEOGRAPHY AND TRAVELS." 
America.—The Athabasca fur district, acccording to the Ret 
E. Petitot, contains large areas of fertile 'ground capable of se 
porting a considerable population. One of these areas is i 
delta formed by the mouths of the Athabasca and Peace rivers, d 
at their entrance into Athabasca lake. Between Egg river 
which the Peace river enters the lake, and Duck portage ont i 
Slave river, is an immense plain, intersected by rivulets and b is i 
the openings from the Peace to the Slave rivers. This delta ® 1 
comparable in fertility with that of the Comargue in proven 
Besides these deltas, the zone of natural prairie along the Rocky 
mountains from the Upper Saskatschewan ed Hay river, Be 
prises every condition necessary for settlem aie 
The Athabasca rises in a little lake at the per of Mt. Brow! 4 
(16,000 feet). Its course before entering Athabasca lake ae aq 
500 to 600 miles. The passage between Athabasca and Gt ak 
Slave lakes, known as Slave river, is 240 miles long, while tht asd 1 
Mackenzie, as the river is called between the Great Slave lak 
EN PRIE NAE 
proper, near the confluence of the Clear-water, is a chain of l - 
volcanic cones, and in this district “boucanes,” or vents, a he 
forth smoke and fire, abound. These are usually found on the e the | 
line of deposits of incompletely carbonized lignite. Where W 1 
Athabasca meets Birch or Bark mountains there is a cañon ©. 
i twenty-five to twenty-eight leagues long, called the Great S4 
followed by several other rapids. There is no fall, but 4 T% 
flat sheet of water, obstructed by enormous boulders. At ¥ . 
part erosion has detached from the rocks a multitude of lent 2 
lar concretions varying from the size of a button to that of a e 
boat. Fossils T in the shelly limestone that alternates 
the bituminous schist 
Lake Athabasca, Deadh, the smallest of the great chain A 
lakes that stretches from the Gulf of St. Lawrence to the Ate 
is 230 miles long by twenty wide. Its bed is deep, and its 07 
rocky, msec food to nothing but caribou. 
s ts paper and map correct four geographi 
1 This department is edited by W. N. LocCKINGTON, Philadelphia. 
r : f 
