IV CONTENTS. 



Pagb 



Art. IX. — Notes on the Geology op the Island of Yesso, 

 Japan, from Observations made in 1862. By W. P, 

 Blake, 293 



Art. X. — Comparison of the Muscles of the Chelonian 



and Human Shoulder-girdles. By Henry S. Williams, 301 



Art. XI. — Graphical Methods in the Thermodynamics of 



Fluids. By J. Willard Gibbs, 309 



Art. XII. — List of Marine Alg^ Collected near East- 

 port, Maine, in August and September, 1873, in con- 

 nection with the work op the U. S. Fish Commission 

 UNDER Prop. S. F. Baird. By Daniel C. Eaton, 343 



Art. XIII. — The Early Stages of the American Lobster 



{Hohiarus Americanus Edwards). By Sidney I. Smith, 351 



Art. XIV. — A Method op Geometrical Representation 

 OP the Thermodynamic Properties op Substances by 

 MEANS of Surfaces. By J. Willard Gibbs, 382 



