582 



INDEX. 



and Temperature Gradient, 532, 

 544. 

 Irwin, Frank, The Invariants of Linear 

 Differential Expressions, 534. 



Jackson, Charles Loring, Biographical 

 Notice of Samuel Cabot, 547. 



Jagger, T. A., Volcanoes of the Aleu- 

 tian Islands, 532. 



Jefferson Physical Laboratory, Con- 

 tributions from, 1, 97, 183, 375, 

 397, 5n. 



Johnson, D. W., elected Resident 

 Fellow, 544. 



Kalmus, H. T. See Goodwin, H. M., 

 and Kalmus, H. T. 



Kathodo-Luminescence of Flourite, 1. 



Kelvin, Lord, Death of, 530. 



Kent, N. A., and Avery, A. H., Differ- 

 ence in Wave-Lengths of Tita- 

 nium XX 3900 and 3913 in Arc 

 and Spark, 351-361, 528. 



Ivinnicutt, L. P., Report of C. M. 

 Warren Committee, 539. 



Laboulbeniaceae, Contributions 

 toward a Monograph of, 534. 



Lanman, C. R., appointed Dele- 

 gate, 530. 



Lead, A Revision of the Atomic 

 Weight of, 363, 529. 



Lead Chloride, The Analysis of, 363, 

 529. 



Lewis, G. N., Outlines of a New Sys- 

 tem of Thermodynamic Chemis- 

 try, 257-293. 



Librarian, Report of, 537. 



Library, Appropriations for, 542. 



Light, The Influence of, on the Daily 

 Activities of Animals, 533. 



Light of very Short Wave-Lengths, 

 The Absorption of the Air for, 

 528. 



Linear Differential Expressions, In- 

 variants of, 534. 



Linnaean Celebration at L^psala, 

 Sweden, 529. 



Liquids, A New Method for the De- 

 termination of the Specific Heats 

 of, 473, 544. 



Luminescence, Kathode-, of Fluorite, 

 1. 



Lyman, Theodore, The Absorption 

 of the Air for Light of very Short 

 Wave-Lengths, 528. 



Lyon, D. G., The Most Recent Ex- 

 ploration in Palestine, 529. 



Magnetic Behavior of the Finely Di- 

 vided Core of an Electromagnet 

 while a Steady Current is being 

 established in the Exciting Coil, 

 97. 



Magnetic Field and Temperature 

 Gradient, The Variation of the 

 Thermomagnetic Effect in Soft 

 Iron with Strength of the, 532, 

 544. 



Magnetic Field, Longitudinal, and the 

 Cathode Rays, 397, 530. 



Manganous Chloride, Transition Tem- 

 perature of, 341. 



Mark, E. L., Report of the Council, 

 547; Report of the Publication 

 Committee. See Zoological Lab- 

 oratory of the Museum of Com- 

 parative Zoology at Harvard 

 College, Contributions from. 



Mark, E. L., and Copeland, Manton, 

 Maturation Stages in the Sper- 

 matogenesis of Vespa maculata 

 Linn., 69-74. 



Massachusetts Institute of Tech- 

 nology. See Research Laboratory 

 of Physical Chemistry. 



Mathews, J. H. See Richards, T. W., 

 and Mathews, J. H. 



Maturation Stages in the Spermato- 

 genesis of Vespa maculata Linn., 

 69. 



McDonald, Arthur, Letter from, 527. 



Measurements, Absolute, of Sound, 

 544. 



Measurements of the Internal Tem- 

 perature Gradient in Common 

 Materials, 532. 



Meteorological Uses of the Polari- 

 scope, Note on Some, 405, 531. 



Mexico, Diagnoses of New Sper- 

 matophytes from, 61. 



Mexico, New and Otherwise Note- 



