LIST OF ILLUST R A T IONS. 



ENGRAVINGS ON COPPER. 



A large Geological Map of the whole District, elaborately coloured, embracing Wisconsin, Iowa, and Min- 

 nesota, together with a portion of Missouri and Illinois. 



A quarto Map of parts of Wisconsin and Minnesota, showing the extension of the rock formations con- 

 cealed under the drift. 



ENGRAVINGS ON STEEL. 



Twenty-seven quarto Plates of Organic Remains, eight of which are executed by the medal-ruling process, 

 from original specimens, two in part by the same process, and five from daguerreotypes of the fossil 

 mammalia and reptilia of Nebraska. 



A quarto Map of the Mauvaises Tcrres of Nebraska. 



Coast Section, one hundred and forty miles in- length, of the Northwest Shore of Lake Superior; coloured. 



PL N, Coast View, Section, and Map of Grand Portage Bay and Pigeon Point ; coloured. 



PI. 1 N, Outline of Hills and Sections in the vicinity of the Northwest Coast of Lake Superior, from 1 



to 9 ; coloured. 

 PI. 2 N, Sections in Minnesota, from 1 to 5; coloured. 



PI. 3 N, Sections on Streams flowing into Lake Superior from the North, in Minnesota, from 1 to 6 ; 



including Section No. 4, S, on the St. Peter's River, and Section No. 7, on the Mississippi, above 



the Falls of St. Anthony; coloured. 

 Sections on the Wisconsin River, from 1 to 35, inclusive; also on the Mississippi, north of the Wisconsin 



River, from 1 to 8, and from A. to T., inclusive; coloured. 

 Sections on the Missouri River, from 1 to 19, in connexion with a draught of the Riv.er; coloured. 

 Sections in continuation of the above, from '20 to 49, up to Council Rluffs ; coloured. 



ENGRAVINGS ON STONE. 



Sections on the Des Moines River, in connexion with a draught of the same, between the Mouth and the 



Raccoon Forks, from 1 to 40 ; coloured. 

 Sections in continuation, above the Raccoon Fork, from No. 41 to No. 05 ; coloured. 

 No. 2. General Section on the Mississippi, between the Mouth of the Wisconsin and the St. Peter's 



Rivers ; coloured. 

 No. 3. Section A to F, on the St. Croix. 



No. 4. Section from the Mouth to the Dalles of the St. Croix; coloured. 



No. 5. Section on the Mississippi, from the Mouth of the St. Croix to the Falls of St. Anthony, and 

 Section 1, S, at the Detroit of the St. Croix ; coloured. 



Sections on the Streams flowing into Lake Superior from the south, No. 1 to 4, W; coloured. 



Section through the interior of Wisconsin, from 1 to 3, R, and Section No. 2, S, at the Falls of St. An- 

 thony; coloured. 



Section No. 0 of the Great Slide on the Mississippi, between Lake Pepin and Mountain Island. 



