of Authors 179 



SMITH, EDGAR F., 267. Atomic Weights of Boron and Fluorine 20,52 



, Investigations with the Elements Columbium, Tantalum, and 



Tungsten. Y. B. 16, 17. 



SMITH, ERWIN F., 27. Bacteria in Relation to Plant Diseases 3, 130 



, concerning Research in Chemistry. Y. B. 1. 



SMITH, H. MONMOUTH, 280. Human Vitality and Efficiency under Pro- 

 longed Restricted Diet 21, 95 



SMITH, L. D., 170. Electrical Conductivity, Dissociation, and Tempera- 

 ture Coefficients of Conductivity of Aqueous Solutions of a 



Number of Salts and Organic Acids 12, 39 



, 210. Absorption Spectra of Solutions as Studied by means of the 



Radiomicrometer, etc 15, 41 



SMITH, MARY R., concerning Chinese Immigration to Pacific Coast. Y. B. 4. 



SOMMER, H. OSKAR, 74. Vulgate Version of the Arthurian Romances 6, 77 



, concerning Arthurian Romances. Y. B. 4, 5, 6, 7, 8, 9, 10, 11, 12. 



SOSMAN, ROBERT B., 63. Electrical Conductivity of Aqueous Solutions 5, 37 



, 157. High Temperature Gas Thermometry 12,44 



SPALDING, E. S., 141. Water-Balance of Succulent Plants 11, 117 



SPALDING, V. M., 113. Distribution and Movements of Desert Plants 9, 120 



, concerning Absorption and Transpiration of Water by Desert 



Shrubs. Y. B. 3, 4. 



on Movements and Distribution of Desert Vegetation. Y. B. 5. 



SPEIDEL, CARL C, 281. Gland Cells of Internal Secretion in the Spinal 



Cord of the Skates, Raiidas 21, 146 



SPOEHR, H. A., 287. Carbohydrate Economy of Cacti 21, 124 



, on Carbohydrate Economy of Cacti. Y. B. 16, 17. 



, on Chemical Effects of Radiant Energy in Plant Processes. 



Y. B. 10, 11. 

 , on Hydratation Capacity of Plant Colloids. Y. B. 14. 



, on Measurement of Light in Physiological Aspects. Y. B. 16. 



, on Origin and Physical Basis of Succulence in Plants. Y. B. 17. 



, on Periodic Variations of Respiratory Activity. Y. B. 13, 14. 



, on Photolysis of Plant Acids. Y. B. 12. 



, on Photosynthesis and Respiration. Y. B. 14, 15, 17. 



, on Variations in Volume of Succulents. Y. B. 8. 



SPRINGER, A., JR., 170. Electrical Conductivity, Dissociation, and Temper- 

 ature Coefficients of Conductivity of Aqueous Solutions of a 

 Number of Salts and Organic Acids 12, 39 



STAEHLER, A., 69. Atomic Weights of Potassium, Silver, Chlorine, etc... 6, 36 



STAGER, HENRY W., 151. A Sylow Factor Table of the First Twelve 

 Thousand Numbers, giving the Possible Number of Sylow 

 Sub-Groups of a Group of Given Order between the Limits of 

 and 12000 11, 32 



STEINMETZ, CHARLES P., report concerning Engineering. Y. B. 1. 



STEJNEGER, L., on Biological Survey of Palearctic Region. Y. B. 1. 



STEVENS, NETTIE M., 36. Studies in Spermatogenesis 4, 107 



, 51. Studies on Germ-Cells of Aphids 4, 107 



, concerning Problems relating to Sex Determination. Y. B. 4, 5. 



STIEGLITZ, JULIUS, 107. Relations of Equilibrium between the Carbon 



Dioxide of the Atmosphere and the Calcium Sulphate, etc 9, 55 



STINE, C M., 180. Freezing-point Lowering, Conductivity, and Viscosity 

 of Solutions of Certain Electrolytes in Water, Methyl Alcohol, 

 Ethyl Alcohol, etc 13<, 40 



STOCKARD, CHARLES R., 103. Habits, Reactions, and Mating Instincts of 



the Walking-stick 8, 134 



, 103. Studies of Tissue Growth : An Experimental Study of the 



Rate of Regeneration in Cassiopea xamachana 8, 134 



, 132. Influence of Regenerating Tissues on the Animal Body .... 10, 135 



, concerning Investigations at the Tortugas Laboratory. Y. B. 6, 7, 8. 



