CONTENTS {continued). 



HI. On the present Position of the Question of the Sourees of the Nitrogen 

 of TegetatK.n, with some new Results, and preliminary Kotice of new 

 Lines of ^estigation. By Sir J. E. Lawss, RES., and J. H 



IV. On the Rhythm of the Mammalian Heart. By J. A. McWilliah, M.D ' 

 Professor of the Instates of Medicine in the University of Aberdeen 

 T. Inhibition of the Mammalian Heart. By Johk A. Mc William, M.D., 

 Professor of the Institutes of Medicine in the University of Aberdeen 



VI. On the Structure of the Electric Organ of Saia circular*. By J C 

 Edinburgh ' ^ ^ ° f ««"» ***** - 



List of Presents 



May 28, 1888. 



The CEOONiA^ECTirEE-TJeber die Entstehung der Vitalen Bewegung. By 

 Professor W. Kuhxe, of Heidelberg .... 



May 31, 1888. 



L On the Effect of Occluded Gases on the Thermo-electric Properties of 

 Bodies and on their Kesistances ; also on the Thermo-electric and other 

 Properties of Graphite and Carbon. By James Moxcema^ D Sc 

 II. Colour ^otometry. Part II. The Measurement of Reflected Colours' 

 KE S ' E ' E " E,R ' S - 5 aM Ma J 01 - General torn 



IH. The Conditions of the Evolution of Gases from Homogeneous Liquids'. 



By V. H. Yelet, M.A., Uniyersity CoUege, Oxford . . . 2 39 



IV. Investigations on the Spectrum of Magnesium. No II By G D* 

 LiVEi^a MA., E.KA, Professor of Chemistry, and J. Dewab, M.A., 

 ± .K.b., Jacksoman Professor, University of Cambridge. . . 2 41 



List of Presents . 



253 



PAGE 



205 

 206 



208 



213 



214 

 218 



220 



220 

 237 



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