INDEX. 



875 



ards, 1-7. 2. The Constancy of 

 Results obtained by one of the 

 New Methods. By T. W. Rich- 

 ards and G. S. Forbes, 8-10. 

 3. The Comparison of the Two 

 Methods, and the Exact Estima- 

 tion of Adiabatic Rise of Tem- 

 perature, 10-19. 



Richthofen, Preiherr von, Death of, 

 810. 



Riddle, L. W., Contributions to the 

 Cytology of the Entomophtho- 

 raceae, 833. 



Robinson, B. L., Diagnosis and Notes 

 relating to American Eupato- 

 rieae, 271-278, 821. 



Rotch, A. Lawrence, On the First 

 Observations with Registration 

 Balloons in America, 315-350 ; 

 Report of Librarian, 825; Re- 

 sults of the Franco-American 

 Expedition to explore the At- 

 mosphere in the Tropics, 818. 



Royal Geographical Society of Aus- 

 tralasia, Invitation from, 814. 



Rumford Committee, Report of, 826; 

 Reports of Progress to, 828. 



Rumford Fund, 823 ; Appropriations 

 from the Income of, 830 ; Papers 

 published by Aid of, 1, 21, 115, 

 279, 319, 359, 433, 449, 455, 541, 

 585, 645, 669. 



Rumford Premium, 868. 



Sabine, W. C, The Accuracy of 

 Musical Taste with Respect to 

 Architectural Acoustics, 821 ; 

 The Sense of Loudness, 811 ; 

 Variation in Reverberation with 

 Variation in Pitch, 821. 



Salts, Fused, On the Ionization of, 

 833. 



Scalar Functions of Hypercomplex 

 Numbers, The, 57-70. 



Schumann Region of Short Wave 

 Lengths, The Spectrum of Hy- 

 drogen in the, 811. 



Scolopendra subspinipes, On the Ka- 

 ryosphere and Nucleolus in the 

 Spermatocytes of, 329-341. 



Selection, The Effects of, upon the 

 Fertility and Variability of Dro- 

 sophila, 729-786, 818. 



Self-induction of Coils, The Influence 

 of Frequency upon the, 787-803. 



Series, Trigonometric, On the Con- 

 vergence and Differentiation of 

 Certain Classes of, 832. 



Serviss, S. B. See Hall, E. H., Camp- 

 bell, L. L., and Serviss, S. B. 



Serviss, S. B. See Hall, E. H., 

 Churchill, E. P., Campbell, L. L., 

 and Serviss, S. B. 



Shaler, N. S., Death of, 822. 



Smith, A. W., The Expansibility and 

 the Compressibility of Ether and 

 of Alcohol in the Neighborhood 

 of their Boiling Points, 811 ; On 

 the Coefficients of Compressi- 

 bility and Expansion of Ether 

 and Alcohol, 833. 



Sociedad Mexicana de Geografia y 

 Estadistica, Invitation from, 810. 



Societe d'Emulation d' Abbeville, Let- 

 ter from, 823. 



Societe Entomologique de Belgique, 

 Letter from, 807. 



Sodium Vapor, The Fluorescence of, 

 and the Resonance Radiation of 

 Electrons, 809. 



Spectra of Titanium, Zinc, and Iron, 

 The Relative Positions of the 

 Arc and Spark Lines of the, 

 279-300. 



Spermatogenesis of the Myriapods, 

 329-344. 



Spermatophytes from the Southwest- 

 ern Uuited States, Mexico, and 

 Central America, Descriptions 

 of, 233-270. 



Standing Committees, appointed, 832; 

 List of, 847. 



Standing Votes, 867 ; Amendment of, 

 813, 815. 



Statutes, 857; Amendment of, 812, 

 815. 



Straight Line in a Plane, On a Postu- 

 late respecting a Certain Form of 

 Deviation from the, 351-357, 810. 



Struve, Otto, Death of, 807. 



Sulphur Compounds and Unsaturated 

 Hydrocarbons in Canadian Petro- 

 leum, 87-113. 



Surface Tension at the Interface 

 between Certain Liquids and 

 Vapors, 359-381. 



Taber, Henry, The Scalar Functions 

 of Hypercomplex Numbers, 57- 

 70. 



