IV CONTENTS. 



^ Page 



XIV. An Apparatus for the Meosurement of the Expansion of Gases 



by Heat under Constant Pressure. By Tiikodoke William 



lliciiAKDS AND Kennetii Lamautixe Mahk .... 415 



XV. The Transition Temperature of Sodic Sulphate Referred anew 

 to the 1 7iter national Standard. By Theodore William 



Richards and Roger Clark Wells 429 



XVI. A Rerision of the Atomic Weight of Caesium. By Theodore 



William Richards and Ebenkzer Henry Archibald 441 

 XVII. On the Multiple Points of Twisted Curves. By John N. Van 



DER Vries 471 



XVIII. MendeVs Law of Heredity. By AV. E. Castle 533 



XIX. On the Temperature Coefficients of Magnets made of Chilled 



Cast Iron. By B. O. Peirce 549 



XX. The Pressure due to Radiation. By E. F. Nichols and G. F. 



Hull 557 



XXI. The Heredity of Albinism. By W. E. Castle and Glover 



M. Allen 601 



XXII. Diffusion and Supersaturation in Gelatine. By Harry AV. 



]\IoRSE AND George W. Pierce 023 



XXII I. On the Thermal Conductivities of Certain Pieces of Rock from the 



Calumet and Hecla Mine. By B. O. Peirce 649 



XXIV. On Families of Curves which are the Lines of Certain Plane 



Vectors either Solenoidul or Lamellar. By B. O. Peirce . 661 



XXV. The Spectra of Gases and Metals at High Temperatures. By 



John Trowbridge . 679 



Records ok Meetings 689 



A Table of Atomic Weights. By Theodore Willia.-\i Richards . . 710 



Report of the Council 713 



Biographical Notices 713 



Alpheiis Hyatt 715 



John Daniel Runkle 727 



Officers and Committees for 1903-1904 731 



List of the Fellows and Foreign Honorary Members . . . 733 



Statutes and Standing Votes . 741 



Rumford Premum 751 



Index 753 



