INDEX 



303 



*Pierce, W. D. Notes on insects of 

 the order Strepsiptera with de- 

 scriptions of new species, 245 



*Plummer, F. G. Chaparral; studies 

 in the dwarf forests, or elfin-wood, 

 of southern Cal., 40 



*Prindle, L. M. Description of the 

 igneous rocks and the Bonnifield 

 and Kantishna districts, 235 



*Ransome, F. L. Geology and ore 

 deposits of the Breckenridge dis- 

 trict, Colo., 89 



Note on some albitite dikes in 



Nevada, 114. 



*Reeve, C. S. Methods for the exami- 

 nation of bituminous road mate- 

 rials, 137 



*Reid, F. R. Oxidative and catalytic 

 powers of soils and subsoils, 128 



* Oxidation in soils, 155 



* Studies in soil oxidation, 125 



*Robinson, W. O. The color of soils, 

 86 



*Rohwer, S. A. Descriptions of new 

 species of wasps w'th notes on 

 described species, 273 



* On some Hymenopterous insects 



from the island of Formosa, 245 



Rosa, E. B. Determination of the 

 international ampere in absolute 

 measure, 211 



Formulas and tables for the calcu- 

 lation of mutual and self induct- 

 ance, 14 



Rose, J. N. A new echeveria from 

 Mexico, 267 



Safford. W. E. The genus Annona: 

 the derivation of its name and its 

 taxonomic subdivisions, 118 



*Sandstrom, J. W. On the relation 

 between atmospheric pressure and 

 wind, 79 



Schaller, W. T. The alunite-beudan- 



tite group, 112 



Beaverite, a new mineral, 26 



* Bismuth ochers from San Diego 



County, Cal., 37 



-The chemical composition of 



nephelite, 109 

 -Chemical composition of the 



French phosphorite minerals, 151 

 —Die chemische zusammensetzung 



von Jamesoint unci Warrenit, 88 

 -Crystalized turquoise from Vir- 

 ginia, 58 

 -Crystalized variscite from Utah, 



150 



-Cuprodescloizite from Cal., 149 

 -Ferritungstite, a new mineral, 24 

 -Hinsdalite, a new mineral, 25 

 — Krystallographische notizen liber 



Albit, Phenakit, und neptunit, 37 

 — Natramblygonite, a new mineral, 



37 

 -Note on barbierite, monoclimic 



soda feldspar, 114 

 -The relations of purpurite and 



heterosite, 113 



-Study of the rutile group, 17/ 

 — Thaumasite from Beaver County, 



Utah, 37 

 *Schreiner, O. Biological analogies 



in soil oxidation, 128 

 * The chemical nature of soil 



organic matter, 127 

 * Concurrent oxidation and re- 

 duction by roots, 155 



* Enzymotic activities in soils, 127 



* Glycerides of fatty acids in soils, 



156 



* Lawn soils, 124 



* Paraffin hdyrocarbons in soils, 156 



* Reduction by roots, 154 



* — - — Soil organic matter as material 



for biochemical investigation, 125 

 * Symptoms shown by plants under 



the influence of different toxic 



compounds, 129 



-Toxic action of organic com- 



pounds as modified by fertilizer 

 salts, 181 



*Schwartz, E. A. Recent biological 

 explorations in Panama, 291 



Seidell, A. Colorimetric and physio- 

 logical estimation of the active 



