INDEX. 



885 



Quayle, W. O. See Mabery, C. F., 

 and Quayle, W. O. 



Refractive Power of Hydrocarbons, 

 177. 



Rhabdotettix. 197, 204. 



Richards, T. W., and Forsythe, R. J., 

 On the Action of Ammonia 

 upon Cupriammonium Aceto- 

 bromide, '237--4:l. 



Richard.s, T. W., and Parker, H. G., 

 A Revision of the Atomic 

 Weight of Magnesium, 53-73. 

 A Revision of the Atomic Weight 

 of Strontium. Second Paper : 

 Tlie Analysis of Stroutic Chlo- 

 ride, 321. 



Robinson, B. L., and Greenman, J. 

 ]M., Contributions from the 

 Gray Herbarium of Harvard 

 University, New Series, No. 10, 

 1-51. 



Rontgen Rays, 253. 



Ropes, J. C, Forts Henry and Donel- 

 son, 327. 



Rotch, A. L., On obtaining Meteoro- 

 logical Records in the Upper 

 Air by Means of Kites and 

 Balloons, 243-251. 



Rumford Committee, Report of, 317. 



Rumford Fund. Papers published by 

 Aid of, 225, 253. 



Rumford Medal, Award of, 321. 



Schoenocaulon Pringlei, 295. 

 Sclerocarpus Schiedeanus, 309. 

 Scudder, S. H., The Genera of North 

 American Melanopli, 193-206. 

 Sedgwick, W. T., and Jackson, D. D., 

 On the ISIinimal Nutrients of 

 Bacteria in Water, 328. 

 Senecio prionopterus, 49. 

 Sex, Variability correlated with, 91. 

 Sinaloa. 197, 204. 

 Solanum deflexum, 301. 



Mitlense, 302. 

 Sonchus asper, 51. 

 Spiranthes Oaxacana, 34. 

 Statutes and Standing Votes, 369. 

 Stevia clinopodioides, 307. 



diffusa, 307. 

 Story, W. E., The Hebrew and Mu- 



hammedan Calendars, 327. 

 Streptotrachelus, 298. 



Pringlei, 298. 



VOL. xxxii. — 25 



Sulphuric Acid, Action on Petroleum 

 Distillates, 175. 



Taber, H., On the Group of real 

 Linear Transformations whose 

 Invariant is a real Quadratic 

 Form, 75-83. 

 Tagetes triradiata, 310. 

 Tephrocalea, 30. 

 Tetrachyron, 29. 

 Tradescantia macropoda, 295. 

 Treasurer, Report of, 315. 

 Trenton Limestone Petroleum, Con- 

 stituents of, 143. 

 Tridax, Revision of the Genus, 3. 

 Tridax angustifolia, 7. 



balbisioides, 5. 



bicolor, 8. 



brachylepis, 4. 



candidissiraa, 10. 



coronopifolia, 9. 



dubia, 10. 



Ehrenbergii, 10. 



erecta, 8. 



Galeottii, 8. 



imbricata, 9. 



lanceolata, 9. 



Mandonii, 9. 



obovata, 8. 



Palmeri, 6. 



petrophila, 5. 



Pringlei, 4. 



procumbens, 7. 



rosea, 6. 



tenuifolia, 8. 



trilobata, 4. 



tuberosa, 4. 

 Trigonospermum tomentosum, 44. 

 Trowbridge, J., The Energy Condi- 

 tions necessary to produce the 

 Rontgen Rays, 253-265. 



Upper Air, Exploration of, 243. 



Variability. Range of, 267. 

 Variation, Correlated, 85. 

 Verbesina Nelsonii, 46. 



oncophora, 309. 



Smithii, 46. 



stenophylla, 309. 



trilobata, 46. 



variabilis, 47. 

 Viburnum elatum, 306. 

 Viguiera Nelsonii, 45. 

 Viscosity of Mercury Vapor, 225. 



