296 Scientific Intelligence. 
harged. 
not self-evident, but is established by the following experiment. 
In a Wiedemann’s galvanometer, one of the bobbins was replaced 
a coil formed of a rubber tube filled with water free from air 
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divisions.— Journ. de Phys., v, 261. ma 
12. Magnetic Induction —M. Cuwouson presents @ second ¥ : 
n the mechanism of magnetic induction, whic 
deflection was obtained amounting in the first swing to — 
E. G. . 
i force in one direction. 
in soft iron; he here treats of magnetic induction In 
paper is in five chapters; in the first are summa d 
priori, be foreseen from the theory, have been P. 
nn. Erganz., vii, 4; Nature, xiv, 202. Jement 
13. Constante of Nature. Parts I and III, and ie Chen. Univ. 
to Part I. Compiled by F. W. Crarx, Prof, of “oo sions, 
Cincinnati. 1876. Washington. Smithsonian Mies ond very 
Nos, 276, 287, 288. Part II of Prof. Clark’s thoroug 
