PROCEEDINGS OF 

 THE ROYAL SOCIETY. 



vol. xxxvi. No. 230. 



CONTENTS. 



February 14, 1884. 



X.:" ... . r.' ' PAGE 



I. On a New Keflecting G-alvanonieter of Great Sensibility, and on New 

 Forms of Astatic Galvanometers. By Thomas Geay, B.Sc, 

 F.B.S.E., and Andeew G-eay, M.A., F.B..S.E. . . . . . 287 



II. A New Form of Spring for Electric and otlier Measuring Instruments. 



By Professors W. E. Ayeton, F.E.S., and John Peeby, M.E. . . 297 



III. Note on the Theory of the Magnetic Balance of Hughes. By Professor 



Silvantjs P. Thompson, B.A., D.Sc, Univ. Coll., Bristol . . .319 



February 21, 1884. 



I. On some Kelations of Chemical Corrosion to Yoltaic Current. By G-. 



GrOEE, F.B.S., LL.D . 331 



II. On an Explanation of Hall's Phenomenon. By Shelpoed Bid well, 



M.A., LL.B 341 



February 28, 1884. 



I. On the Structure and Functional Significance of the Human Corpus 



callosum. By Professor D. J. Hamilton 349 



II. On the Surface Forces in Fluids. By A. M. Woethington . . 351 



List of Presents . . . . . , . . . . . . 353 



On a Method of Tracing Periodicities in a Series of Observations when the 

 Periods are unknown. By Yinayek Naeayett Nene, First Assistant, 

 Government Observatory, Colaba, Bombay (Plate 4) 361 



Price Four Shillings. 



