168 Scientific Intelligence. 
but only to the same degree to which it can be also converted | 
into work. 
If placing the three quantities in this order: (1) Electrical 
potential energy; (2) Mechanical work; (3) Heat. We have: 
1 can be entirely transformed into 2 and into 3; 2 can be © 
entirely changed into 3 but only partly into 1; 3 in general, 
can never be entirely transformed into 2 or into 1. The remain- 
der of the paper contains the application of the foregoing laws to 
the theory of the Voltaic cell_— Wiedeman’s Ann. der Physi. 
Chemie, 1878, No. 10, p. 182. bie 
II. GeoLtogy AND MINERALOGY. 
1, The Less of Minnesota ; by N. H. Wrxcuett, The follow- — 
t 
wells, make this plain. There is a gradual loss of bowlders, 
then of th an equa. 
gradual increase of the characteristic features of the less,— 
close, clayey consistency, crumbling in the air like slacking 
quicklime, and white limy concretions, in some cases ‘ 
eretions which have been so often mentioned as a peculiarity of 
e con- 
