172 P. E. Chase on Magnetic Inclination. 
heat and cold upon air and the diamagnetic 
upon iron, nickel, and cobalt (2861, and III, pp. 446, 460, 464, 
sion, is at every instant subjected to four principal and important 
impulses, two toward the centers of the sun and earth res 
tions, w 
gravitation currents, may be thus accounted for. 
% Humboldt speaks of the accumulation of electricity in the lower equinoctial 
regions, ** ne maximum of heat, and when the barometric tides are near thelt — 
. minimum.”— Taylor's Scient. Mem., iii, 398. by 
