IV CONTENTS. 



Pace 

 X. TJu Transition '!'■ in of \fanganous Chloride: A New 



Fixeil Point in '/'In in,, urn !ii/- By T. W RlCUARDS A.\l> 



F. Wrede 34] 



XI. Different m Wave-LengOu of Titanium XX 8900 and :i:* 1 :i in 



Arc and Spark. By N. A. Kini and A. II. Avery . A~>\ 



XII. A Revision of tht Atomic Weight of Lead. Preliminary Paper. 



— The Analysis «f Lead Chloride. By (J. 1'. Baxter 



am> J. II. Wll.S..\- 353 



XIII. .1 Simple Method <>f Measuring tin Intensity <>f Sound. Hv 



G. W. Pierce :',7;> 



XIV. Longitudinal Magnetic Field and the Cathode Rays. By John 



Trowbridge :;:i7 



XV. Note on Some Meteorological Uses of the Polariscope. By 



Louis Beli 405 



XVI. The Sensory Reactions ofAmphioxus. Hv <;. B.Parker . . 413 



XVII. On Delays before dixiyvwpiiriu in dink Tragedy. Hv W. P. 



Dickey ....... 457 



XVIII. A New Method for the Determination of the Specific Heats of 



Liquids. By T. W. Richards and A. W. Rowk . . . 173 



XIX. Pisistratus and his "Edition of Homer. Hv S. II. New- 



ii.mi 189 



XX. Positive Rays. Hv John Trowbridge ."'11 



XXI. Concerning tht Ust oj Electrical Heating in Fractional Distilla- 

 tion. Hv 'I'. W. Richards and J. II. Mathews . . . 519 



XXII. Records of Mi i riNGS 527 



Report <>i thi Councii ~>17 



Biographical \<>i ii i 



Samuel Cabot .".17 



