INDEX 667 



You. Page 

 Plateau Region of Southwestern United States, Basin 



Features of, C. R. Keyes XI, 254 



Plates, Plane, Electrical Capacity of, L. E. Dodd XXIV, 217 



Zone, See Engine, Ruling. 

 Platinum, See Silver. 

 Platinum-iridium, See Wire. 



Platyceras, Sedentary Habits of. C. R. Keyes I. II, 24 



Pleistocene Deposits Between Manilla and Coon Rapids, 



G. F. Kay XXIV. 99 



Exposures in Cedar Rapids, W. D. Shipton XXI, 221 



Section from Des Moines to Allerton, J. L. Tilton XX, 213 



See Capitol Hill, Drift. 

 Plethodon glutinosus. Cranial Nerves of, H. W. Norris. . . . XVI, 189 

 Pleuroptyx, See Coal Measures. 

 Plexus, See Choroid Plexus. 

 Plum Curculio, See Curculio. 

 Poison Oak, See Oak. 

 Polarimeters, See Heating Apparatus. 



Polistes metricus, Life History and Habits of, F. C. Pellett. XXIII, '275 

 Polk Couirty, See Birds, Drift. 

 Pollen, See Apples. 

 Pollen Tubes, See Richardia. 

 Pollination, Insect, of Timberline Flowers in Colorado, 



L. A. Kenoyer XXIII, 483 



See Frasera. 

 Polygamy, See Pinnepedia. 



Polygonacece, Structure of Seed Coats of, Emma Sirrine II, 128 



Polyporacese of Fayette, G. W. Wilson XVI, 19 



Parasitic, C. D. Learn XVI, 23 



Popocatepetl, See Citlaltepetl. 



Porphyry, See Granite. 



Port Byron, See Le Claire Beds. 



Portland Cement, See Cement. 



Potassium, Separation and Gravimetric Estimation of, 



S. B. Kuzirian XXIV, 547 



See Phthalate. 

 Potato Blight, See Blight. 



Pottery, Indian, of Oneota Valley, E. Orr XXI, 231 



Poweshiek County, See Coal Measures. 



Prairie Openings, See Forest. 



Province, Ecological Study of, Ada Hayden XVIII, 55 



in Central Iowa, Floristic Features of, Ada Hayden. . XXV, 369 

 Prairies, See Forestry. 

 Pre-Cambrian, See Rocks. 



Precipitation, Cyclonic Distribution of, J. A. Udden XIII, 223 



Pre-Kansan, See Aftonian, Summary. 



Peat, See Peat Bed. 

 Presidential . Address, 188S, Local Problems in Science, 



H. Osborn I, /. 19 



