WRITINGS OF C. A. WHITE 123 



25. 



White, C. A. Announcement of the Existence of Cretaceoua Rocks in Guthrie 

 County, Iowa <Proc. Amer. Ass. Adv. Sci., 17th Meeting. Chicago, 18G8, vol. 

 xvii, pp. 326-327. Cambridge, 1869. 



26. 



White, C. A. Observation on the Red Quartzite Bowlders of Western Iowa; and 

 their original ledges of Red Quartzite in Iowa, Dakota, and Minnesota. <^Proc. 

 Amer. Ass. Adv. Sci., 17th Meeting. Chicago, 1868, vol. xvii, pp. 340-342. Cam- 

 bridge, 1869. 



Same. Cambridge, 1869, pp, 340-342. Thirty separates printed without title page, 

 covers, or repaging. 



27. 



White, C. A. Report on the Geological Survey of the State of Iowa, to the Thir- 

 teenth General Assembly, January, 1870, Containing results of Examinations 

 and Observations made within the years 1866, 1867, 186"', and 1869. By Charles 

 A. White, M. D., Geological Corps ; Charles A. White, State Geologist ; Orestes H. 

 St. John, Assistant; Rush Emery. Chemist. Vols. I and 11. Des Moines, 1870, 



CONTENTS OF VOLUME I, 



Page. 



Introduction, including popular explanation of geological subjects 7-27 



Part First: Physical Geogi'aphy and Surface Geology ; Four plates and two maps . . 28-166 



Chapter 1. Surface features 28-81 



Chapter II. Surface deposits 82-121 



Chapfeerlll. Soils, &c 122-138 



Charjter IV. Climate (by T. S. Parvin) 139-164 



Part ftecond : General Geology ; Three plates and three sections 165-294 



'Chapter I. Azoic, Lower Silurian, Upper Silurian, and Devonian systems 167-188 



'(Smithia [Pachyphyllum] woodmani [n. s., White, 1870] is described on p. 188.) 



Chapter II. Carboniferous system 189-230 



Chapter III. Carboniferous system continued 231-263 



Chapter IV. Carboniferous system concluded 264-284 



Chapter V. Ciotaceous system 285-294 



Part Third : County and Regional Geology 295-381 



Chapter I. Geology of Southwestern Iowa ; and one section 296-381 



Glossary 383-386 



Index 387-391 



CONTENTS OF VOLUME IL 



Pait First: County and Regional Geology 1-274 



Chapter I. Geology of the Middle Region of "Western Iowa and other coanties 



(by O. H. St. John) ; with one plate and one section : 1-200 



Chapter II. Northwestern Iowa ; One plate 201-232 



Chapter III. Middle Region of Northern Iowa 233-253 



Chapter IV. Geology of the Coal counties ; One plate 254-274 



Part Second : Mineralogy-, Lithology, and Chemistry 275-402 



Chapter I. Peat and Petroleum ; One plate 275-292 



Chapter II. Gypsum and other sulphates of the Alkaline Earths 293-306 



Chapter III. Building materials, metals, and miscellaneous substances 307-342 



Chapter IV. Chemist's Report (by Rush Emery). 



Section I. Rocks and minerals 345-354 



Section II. Waters 354-357 



Section III. Coals 357-397 



Section IV. Peats 397-402 



Appendices : 



Appendix A. Elevation in feet of points ah)ng the lines of Iowa railroads, both 

 couiplctid and ])rojected (by the chief engineers of the respective 



roads 405-418 



Appendix 15. (Jatalogiic of 1 lie IJii ds of Iowa (by J. A. Allen) 419-427 



Appendix C. GoveniuK^ut Siu-veys of the Public. Lauds (by C. W. Irish) 428-435 



One Geological map of the State, colored. 



