CONTENTS {continued). 



April 7, 1881. 



PAGE 



I. On the Minute Structure of the Lung of the Newt with especial reference 

 to its Nervous Apparatus. By William Stieling-, M.D., Sc.D., 

 Eegius Professor of the Institutes of Medicine (Physiology) in the 

 University of Aberdeen 37 



II. On an Electrodynamic Balance. By H. Helmholtz, For. Mem. B.S., 



Professor of Physics in the University of Berlin ..... 39 



III. On the Internal Forces of Magnetized and Dielectrically Polarized Bodies. 



By Professor H. Helmholtz, For. Mem. E.S 40 



April 28, 1881. 



I. The Influence of Stress and Strain on the Action of Physical Forces. By 



Heebeet Tomlinson, B.A. 41 



II. Lucifer : a Study in Morphology. By W. K. Beooks, Associate in 

 Biology and Director of the Chesapeake Zoological Laboratory of the 

 Johns Hopkins University, Baltimore, Md., U.S.A. .... 46 



List of Presents . . . 48 



Influence of Yoltaic Currents on the Diffusion of Liquids. By Cr. G-oee, 



LL.D., F.E.S. . . . . . . . . '. . .56 



Phenomena of the Capillary Electroscope. By Gr. G-oee, LL.D., F.E.S. . 85 



CATALOGUE OF SCIENTIFIC PAPEES, COMPILED BY THE EOYAL 



SOCIETY. 



Published by Her Majesty's Stationery Office. 

 8 vols., 4to. 1800—1873. Per vol. : 20s., cloth ; 28*., half -morocco. 

 On Sale by Murray, Albemarle Street, and Trubner and Co., Ludgate Hill. 



HAEEISON AND SONS, 45 & 46, ST. MAETIN'S LANE, W.C., 



AND ALL BOOKSELLEES. 



