798 



INDEX. 



Combustion, Concerning, 637, 



741. 

 Pressure in Gases, Friction and 



Force due to Transpiration as 



Dependent on, 113. 

 Pritchett, H. S., resigns Fellowship, 



742. 

 Publication, Appropriation for, 740, 



756. 

 Publication Committee, 771"; Re- 

 port of, 754. 

 Publication Fund, 746. 



Racing Animals, An Approximate 

 Law of Fatigue in the Speeds 

 of, 273. 



Reale Universita Napoli, Letter from, 

 737. 



Reconstructions, An Electric Wax- 

 Cutter for Use in, 627, 740. 



Records of Meetings, 737. 



Research Laboratory of Physical 

 Chemistry, Contribution from, 

 758. 



Retentiveness of a Mass of Fine Iron 

 Particles, On the Permeability 

 and the, 85. 



Retzius, M. G., elected Foreign Hon- 

 orary Member, 743 ; accepts 

 Membership, 745. 



Reverberation, Variation in, with 

 Variation in Pitch, 19. 



Richards, T. W., Henderson, L. J., 

 and Frevert, H. L., Concerning 

 the Adiabatic Determination of 

 the Heats of Combustion of 

 Organic Substances, especially 

 Sugar and Benzol, 571-593, 

 741. 



Riddle. L. W., On the Cytology of the 

 Entomophthoraceae, 175-197. 



Ripley, W. Z., elected Resident Fel- 

 low, 743 ; accepts Fellowship, 

 744. 



Robinson, B. L., New or Otherwise 

 Noteworthy Spermatophytes, 



chiefly from Mexico, 742 ; Stud- 

 ies in the Eupatorieae : (I.) Re- 

 vision of the (ienus Piqxieria ; 

 (II.) Revision of the Genus 

 Oph n/os!porus ; (H L ) The Genus 

 Helof/i/ne and its Synonyms ; 

 (IV.) Diagnoses and Synonymy 

 of Eupatorieae and of certain 



other Compositae which have been 

 classed with them, 1-48. 



Robinson, B. L., and Bartlett, 11. II., 

 New Plants from Guatemala, 

 collected by C. C. Deam, 742. 



Rontgen Rays through jNIetallic 

 Sheets, The Transmission of, 

 669, 739. 



Rotch, A. L., Meteorological Obser- 

 vations in 1906 above the Tropi- 

 cal and Equatorial Atlantic, 745 ; 

 Report of Librarian, 747 : Re- 

 sults of the Franco-American 

 Expedition to Explore the At- 

 mosphere in the Tropics, 261-272. 



Rumford Committee, Report of, 748 ; 

 Reports of Progress to, 749. 



Rumford Fund, 746; Appropriations 

 from the Income of, 756 ; Papers 

 published by Aid of, 233, 419, 

 571, 595, 637, 649, 669. 



Rumford Premium, 792 ; award of, 

 741, 754. 



Sabine, W. C, Architectural Acous- , 

 tics, 49-84; The Sensation of 

 Loudness, 740. 



Sanger, C. R., and Black, O. F., The 

 Determination of Arsenic by the 

 Guthzeit Method, 741 ; The De- 

 termination of Arsenic in the 

 Urine, 741. 



Sanger, C. R., and Gibson, J. A., 

 The Determination of Small 

 Amounts of Antimony by the 

 Berzelius-Marsh Process, 717- 

 733, 741. 



Sawyer, E. F., resigns Fellowship, 

 745. 



Schoenocaulon, New Species of, 

 from Mexico, 742. 



Semenov, Pierre de, 80th anniversary 

 of, 741. 



Senecis, New Species of, from Mex- 

 ico, 742. 



Seventh International Zoological Con- 

 gress, Invitation from, 741. 



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

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

 Churchill, E. P. 



Shuddemagen, C. L. B., The Demag- 

 netizing Factors for Cylindrical 

 Magnets of Different Dimen- 

 sions, 745. 



I 



