Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean: Vol. 1, Pt. 2

LIST OF PAPERS ANNEXED TO REPORT.
15. Report of Lieutenant C. Grover, U. S. A., of his survey of the upper Missouri from the
Great Falls, to connect with the survey of Lieutenant Donelson.
16. Report of Lieutenant R. Saxto n, U. S. A., of his trip in a keel-boat from Fort Bento to
Fort Leavenworth, and of the navigability of the Missouri river by steamers.
F.-SURVEYS FROM THE EASTERN BASE OF THE MOUNTAINS TO THE COLUMBIA.
17. Report of the route of Lieut. R. Saxton, U. S. A., from the Columbia valley to Fort Owen,
and thence to Fort Benton.
18. Report of.Lieut. Donelsonr as to the railroad practicability of the route from Fort Benton, by
Lewis and Clark's and Cadotte's Passes, Blackfoot trail, the Bitter Root and Jocko lines, to
Clark's fork, and thence by Clark's fork to Wallah-Wallah, with the sub-reports of Licut. R.
Arnold, U. S. A., Mr. F. W. Lander and Mr. A. W. Tinkham, assistant engineers.
19. Report of Mr. A. W. Tinkham, assistant engineer, as to the railroad practicability of the
line of the Marias Pass of the northern Little Blackfoot trail and of the southern Nez
Perces trail.
20. Report of Dr. John Evans Gf his route from Fort Benton to the lower Columbia.
21. Report of Lieut. Richard Arnold, U. S. A., of his route from the mouth of Clark's fork, by
Colville, the Grand Coulee, and the mouth of Snake river, to Wallah-Wallah.
22. Report of Lieut. R. Macfeely, U. S. A., of his return from Fort Owen to Wallah-Wallah.
G.-NAVIGABILITY OF THE COLUMBIA.
23. Report of Dr. George Suckley, assistant surgeon U. S. A., of his trip in a canoe from Fort
Owen down the Bitter Root, Clark's fork and Columbia river, to Vancouver.
Rocky mountain surveys, by Lieut. John Mullan, U.S. A.
24. Report of an exploration from Fort Benton to the Flathead camp, beyond the Muscle Shell
river, and thence by the -southern Little Blackfoot river to the St. Mary's valley, by Liet.
John Mullan, U. S. A.
25. Report of an exploration from Cantonment Stevens to Fort Hall and back, by Lieut. John
Mullan, U.S. A.
26. Report of route from Cantonment Stevens to Fort Benton and back, by Lieut. John Mullan,
U.S.A.
H.-ITINERARY.
27. Itinerary of the route from St. Paul to Fort Union, prepared by Mr. Tinkham.
28. Itinerary of the route from Fort Union to Fort Benton, prepared by Lieut. Donelson.
29. Itinerary of the route from Fort Benton by Cadotte's Pass, the Jocko river and Clark's fork,
to Wallah-Wallah, with an estimate of the time, labor, and cost of making a practicable
wagon-road, by Lieut. Donelson.
30. Itinerary of the route from Hell Gate, over the Cceur d'Alene mountains, to the Cceur d'Alene
mission, and thence to the intersection of the route just mentioned.
31. Itinerary of the route from Fort Benton, by the northern Blackfoot trail, to Fort Owen.
32. Itinerary of the route from Fort Owen, by the Joeko river, Flathead lake, and Marias Pass,
to Fort Benton.
33. Itinerary of the route from Fort Owen, by the southern Nez Perces trail, to Wallah-allah.
34. Itinerary of the Cascades, Captain McClellan's route, prepared by Mr. J. F. Minter, assist ant engineer.
I.-GE-NERAL CLIMATOLOGY.
35. Report of Lieut. S. Mowry, U. S. A., to Capt. George B. McClellan, corps of Engineers, of
the meteorology of the Cascades.
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