iv CONTENTS. 



Page 

 XIV. An Apparatus for (he Measurement of the Expansion of Gases 



by Heat under Constant Pressure. By Theodore William 



Richards and Kenneth Lamartine Mark .... 415 



XV. The Transition Temperature of Sodic Sulphate Referred anew 

 to the International Standard. By Theodore William 



Richards and Roger Clark Wells 429 



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



William Richards and Ebenezer Henry Archibald 441 

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



der Vries 471 



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



XIX. On the Temperature Coefficients of Magnets made of Chilled 



Cast Iron. By B. O. Peirce 519 



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 W. 



Morse and George W. Pierce G23 



XXIII. 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 ichich are the Lines of Certain Plane 



Vectors either Solenoidal or Lamellar. By B. O. Peirce . G61 



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



John Trowbridge . • 679 



Records of Meetings 689 



A Tabic of Atomic Weights. By Theodore William Richards . . 710 



Report of the Council 713 



Biographical Notices 713 



Alpheus Hyatt 715 



John Daniel Runklc 727 



Officers and Committees for 1903-1904 731 



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



Statutes and Standing Votes . 741 



Rumforh Premium 751 



Index 753 



