سم یموب 
EXPLORATIONS FROM A. D. 1800 To a. D. 1832. 27 
This survey was made with a chain and compass, corrected by observations for latitude with 
a good sextant. The longitudes were referred to the meridian of Fort Osage, which was 
taken at 93° 51' 03". This road is that of the Santa Fé trail, along the divide between the 
Kansas and Arkansas rivers. It strikes the latter stream near the Plum Buttes, and follows 
up its valley to Choteau's island. Here it turns southward to the Cimarron river, follows this 
stream about eighty-seven miles, and then bears off to the Rabbit/s Ear creek, which is marked 
on this map as the head of the north fork of the Canadian. Continuing west, the road enters 
` the mountains near the source of Ocate river, and terminates at Taos. 
These maps, though not displaying great skill in topographical representation, were con- 
structed from a survey more elaborate than any subsequent one over the same route. They 
are, therefore, of much value at the present time. The names now in use along the line were 
many of them given by this party. I am not aware that the original map and notes have ever 
been published. 
R. RICHARDSON'8 SURVEY OF ROAD FROM LITTLE ROCK TO FORT GIBSON, 1826. 
The map of this road, in the Topographical Bureau, is constructed on a scale of four miles 
to an inch. The survey was made, I believe, with a chain and compass, and is valuable as 
showing the relative longitudes of Fort Smith and Fort Gibson. It does not seem to have 
been used on late compilations. 
NORTHWEST BOUNDARY COMMISSION, 1828. 
The commissioners appointed under the treaty of Ghent for ascertaining and establishing 
the north and northwestern boundary between the United States and Great Britain, made a 
decision, (June 18, 1822,) at Utica, New York, which was published by a resolution of the 
United States House of Representatives in 1828. As this publication extends their labors no 
further west than the outlet to Lake Superior, the information and maps do not relate to the 
region under consideration. I believe that the surveys made under the commission were 
extended as far west as the Lake of the Woods, and according to these the boundary line was 
fixed in the second article of the Ashburton treaty. In the State Department there is a map, 
in five sheets, on a scale of an inch to two miles, à reduction of which was published on 
Nicollet's map of the hydrographical basin of the Upper Mississippi. The original maps have 
the following title: ** Map of a part of certain surveys along the water communications north- 
ward of Lake Superior, commencing at the mouth of the Pigeon river and extending westward 
to Lake Namekan; made by order of the honorable the commissioners under the sixth and 
seventh articles of the treaty of Ghent. 
“Signed: ‘PETER B. PORTER, e 
“u ANTH. BARCLAY, | Commissioners. 
“I. FERGUSON, Surveyor. 
" GEORGE W. WHISTLER, JU. S. Artillery, 
** Draughtsman and Assistant Surveyor." 
BRITISH ADMIRALTY CHART OF LAKE SUPERIOR, 1828. 
This chart, published from reconnaissances made by Lieutenant H. W. Bayfield, R. N., are, 
to this day, the best we have of the northern shore of Lake Superior. 
