INDEX 665 



Vol. Page 

 and Mortimer, F. S.. The Electromotive Force and 



Free Energy of Dilution of Lithium Chloride in 



Aqueous and Alcoholic Solutions XXIV, 507 



and Weigle, O. M., Velocity Coefficients of the Re- 

 action Between Ethyl Iodide and Silver Nitrate in 

 Ethyl and Methyl Alcohol and Mixtures of these 



Solvents XIX, 137 



See Fowler and Pearce, Fry and Pearce, Huong and 

 Pearce, Mortimer and Pearce. 



Peat Bed, Buried, in Union County, T. E. Savage XI. 103 



Pre-Kansan, T. H. Macbride IV, 63 



Peck, Morton E., The Flowering Plants of Hardin County XII, 193 



Protective Adaptations in the Nesting Habits of Some 



Central American Birds XV, 177 



Flora of the East Slope of the Cascade Mountains in 



Crook County, Oregon XXII, 143 



A Section of Upper Sonoran Flora in Northeastern 



Oregon XXIII, 317 



Bella Beds, Rhizopods in, J. A. Udden IX, 120 



Pellaea atropiirpurea Link, in Muscatine County. F. Rep- 

 pert I, ///, 93 



Pellett, Frank C, The Harvest Mouse in Iowa XIX, 197 



Food Habits of Red-tailed Hawk, Cooper Hawk and 



Sparrow Hawk XIX, 199 



Nest Boxes for Woodpeckers XX, 305 



Food Habits of the Skunk XX. 307 



Butterflies of Chance Occurrence in Cass County.... XXT, 347 

 Life History and Habits of Pollstes metricus Say.... XXIII, 275 

 See Van Hyning and Pellett. 



Pemphiginse, Wax Glands of, H. Osborn I. /. 64 



Pemphigus Occurring on Thorn, A New Species of, F. A. 



Sirrine I, IV, 129 



Pendulum, Torsion, Torsional Strain in, L. P. Sieg XIX, 189 



See Galvanometer. 



Pentatomoidea, Iowa, D. Stoner XXII, 347; XXIII, 303 



Nearctic, H. E. Summers VI, 40 



Perch, Yellow, in Cayuga Lake, Food of, W. A. Hoffman XXV, 213 

 Permian. See Russia. 



Peronosporales for 1907, G. W. Wilson XV, 85 



Perry, Winifred, The Cutinization of Apple Skins in 

 Relation to their Keeping Qualities and their Envir- 

 onment XXIV, 483 



Petri Dishes, Plating out, L. S. Ross XII, 7 



Phsenological Notes, L. H. Pammel I, II. 87 ; I. III. 46 



Phenological Records, See Plants. 



Phloeothrips, New Species of, H. Osborn Ill, 228 



Phonopticon, Crystal, F. C. Brown XXII, 317 



Phosphate, See Crops. 

 Phosphor-bronze, See Wires. 



