TWENTY-SEYENTn ANNUAL MEETING. 321 



No. 24, pp. 943-lOOG; 13 figs. Experiments with fungicides, by L. H. Pammel; 

 pp. 985-990. 



No. 25, pp. 3-48. Specific gravity and weight of wheat seed, by L. H. Pammel 

 and F. C. Stewart; pp. 20-31. 



No. 26. The Russian Thistle, by L. H. Pammel, James Wilson, and J. Xi. 

 Budd; 32 pp.; 9 plates. 



No. 27, pp. 85-154; 4 pll., figs., etc. Potato scab and its prevention, by L. H. 

 Pammel; pp. 120-129. Rutabaga rot, by L. H. Pammel; pp. 130-135. 

 DAVENPORT.— Academy of Natural Sciences: 



Proceedings, Vol. V, Part II. January, 1885— January, 1889. 1893. Pp. i-vili, 

 185-370; pll. I, II. Ceanothus L.— Recent field notes, with a partial revision of 

 species, by C. C. Parry; pp. 185-194. Synopsis of proceedings; pp. 195-280. 

 DES MOINES.— Iowa Academy of Sciences: 



Proceedings, Vol. I, Part IV, 1893, 142 pp., contains the following papers, or 

 abstracts of them: On the assumption of a special "Nascent Sate," and Some 

 peculiarities of solutions of ferric sulphocyanate, by Launcelot Andrews; pp. 

 9-15. Experimental engineering at the Iowa Agricultural College, by G. W. 

 Bissell; pp. 16-lS. On the geological position of Bennettites dacotensis Mac- 

 bride, with remarks on the stratigraphy of the region in which the species was 

 discovered, by Samuel Calvin; pp. 18-22. Notes on the lower strata of the 

 Devonian series in Iowa, by Wm. Harmon Norton; pp. 22-24. Derivation of 

 the Unione fauna of the Northwest, and Process of formation of certain 

 quartzites, by Charles R. Keyes; pp. 25-31. Origin of the present drainage 

 system of Warren county, by J. L. Til ton; pp. 31-33. Structure of the Mystic 

 coal basin, and Sigourney deep well, by H. Foster Bain; pp. 33-38. Southern 

 extension of the Cretaceous in Iowa, and Topography of the granite and por- 

 phyry region of Missouri, by E. H. Lonsdale; pp. 39-48. Occurrence of zinc in 

 Northeastern Iowa, and Satin spar from Dubuque, by A. G. Leonard; pp. 

 48-55. North American cycads, by Thomas H. McBride; pp. 62-65. Bacteria: 

 Their relation to modern medicine, the arts and industries, by L. H. Pammel; 

 pp. 66-91. The Johns Hopkins biological laboratory, by W. S. Windle; pp. 112- 

 115. Laboratory notes in zoology, by Herbert Osborn; pp. 124-127. 



Iowa Geological Survey: 



Iowa Geological Survey, Vol. I; 19x27 cm. First Annual Report of the State 

 Geologist for 1S92, with accompanying papers; 472 pp.; 10 pll.; 26 figs. Geo- 

 logical Formations of Iowa, by Charles Rollin Keyes; pp. 11-144; geological 

 map of Iowa (pi. I) and pll. II-IX; figs. 1-15. Cretaceous Deposits of Woodbury 

 and Plymouth Counties, with observations on their economic uses, by Samuel 

 Calvin; pp. 145-161; figs. 16, 17. Ancient Lava Flows in the Strata of North- 

 western Iowa, by Samuel W. Beyer; pp. 163-169; fig. 18. Distribution and Re- 

 lations of the St. Louis Limestone in Mahaska county, Iowa, by Harry 

 Foster Bain; pp. 171-179; figs. 19, 20. Annotated Catalogue of Minerals, by 

 Charles Rollin Keyes; pp. 181-196; pi. X; figs. 21-26. Some Lime-burning Dolo- 

 mites and Dolomitic Building-stones from the Niagara of Iowa, by Gilbert L. 

 Houser; pp. 197-207. Bibliography of Iowa Geology, by Charles Rollin Keyes; 

 pp. 209-464. 



Vol. II, 1894. Coal Deposits of Iowa, by Charles Rollin Keyes; 536 pp.; 18 

 pll. ; 222 figs. 



Vol. III. Second Annual Report, 1893, with accompanying papers, 19x27 cm., 

 bound in green cloth; 501 pp.; 37 pll. and maps; 34 figs. Reports of State Ge- 

 ologist, Assistant Geologist, and Chemist; pp. 19-44. Work and Scope of the 

 Geological Survey, by Charles Rollin Keyes; pp. 45-98; geological map of Iowa 

 (pi. I) ; pll. II-VI. Cretaceous Deposits of the Sioux Valley, by Harry Foster 

 Bain; pp. 98-114; pll. VII, VIII. Certain Devonian and Carboniferous outliers 

 in Eastern Iowa, by William Harmon Norton; pp. 115-133. Geological Section 

 along Middle river in Central Iowa, by J. L. Tilton; pp. 135-146; fig. 2. Gla- 

 cial Scorings in Iowa, by Charles Rollin Keyes; pp. 147-165; pll. IX-XV; fig. 3. 

 Thickness of the Paleozoic Strata of Northeastern Iowa,- by William Harmon 

 Norton; pp. 167-210; fig. 4 and pll. XVII, XVIII, showing sections and records 

 of twelve deep wells in nortlieastern Iowa. Composition and Origin of Iowa 

 Chalk, by Samuel Calvin; pp. 211-236; pi. XIX. Buried River Channels in South- 

 eastern Iowa, by C. H. Gordon; pp. 237-255; figs. 5-7. Gypsum Deposits of Iowa, 

 by Charles Rollin Keyes; pp. 2.57-304; map of the Iowa gypsum region (pi. XX); 

 pll. XXI-XXV; figs. 8-12. Geology of Lee County, by Charles Rollin Keyes; 



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