INDEX 643 



Hawks, Broad-winged, Remarkable Plight of, B. H. Bailey 



Ha worth, Erasmus, Crystalline Rocks of Missouri 



Missouri Minerals . . . . ' 



Prismatic Sandstone from Missouri 



Hay, See Sudan Grass. 



Hayden, Ada, An Ecological Study of a Prairie Province 



in Central Iowa XVIII, 55 



Notes on the Ploristic Features of a Prairie Province 



in Central Iowa XXV, 369 



Health Regulations in Iowa, Early. L. S. Ross XVII 229 



Heating Apparatus in Work with Polarimeters and Re- 



fractometers, J. N. Pearce XXII, 165 



Heilenian, W. H., A Chemical Study of Honey II, 67 



Heise, George, A Study in the Determination of Calcium XVII, 136 



Helix cooperi, F. M. Witter I, III, 28 



Helminthosporium teres Sacc, See Barley. 



Hemiptera, Distribution of, H. Osborn, 1,1, 64; I, IV, 120 



of Iowa, Catalogue of, H. Osborn 



I, /, 65; I, 77, 120; I, ///, 103; V, 232 



of Northwestern Iowa, H. Osborn VI, 36 



Hemipterous Fauna, See Fauna. 



Hendrixson, W. S., Electrolysis of Silver — Laboratory 



Notes I, IV, 15 



Presidential Address, 1899, Some Features of the 



Science of a Hundred Years Ago VII, 22 



A Method for the Determination of Chloric Acid XI, 147 



The Action of Chloric Acid on Metals XI, 150 



Periodical Literature in Iowa on the Subject of 



Chemistry XI, 162; XIII, 175 



Method for the Determination of Hydriodic and Hy- 



drobromic Acids XII, 9 



Logarithmic Factors for Use in Water Analysis XIII, 173 



Action of Bromic Acid on Metals XIII, 179 



Some Features of Iowa Ground Waters XIV, 187; XVI, 135 



Points Regarding the Casing of Well (4) at Grin- 



nell XVII, 139 



Acid Potassium and Acid Sodium Phthalates as 



Standards in Alkalimetry and Acidimetry XXII, 217 



Improved Method of Determining Solubility XXIII, 31 



Some Improved Laboratory Methods XXV, 497 



Further Work on Acid Potassium Phthalate as a 



Standard in Volumetric Analysis XXV, 501 



Henry County, See Coleoptera, Plants, Sedges. 

 Heredity and Evolution, Problems of, Presidential Ad- 

 dress, 1902, H. E. Summers X, 26 



Heron, Black Crowned Night, Food of, in Captivity, B. H. 



Bailey XIX, 193 



Herpetology of Iowa, A. G. Ruthven XVII, 198; XIX, 207 



