200 W. A. Norton on Molecular Physics. 
normally. Of these two operative causes, the first should aug- 
ment on both sides of the secondary magnetic equator, and for 
considerable distances. It should be much greater on the side of 
the descending, than on that of the ascending node of this equa- 
tor, because the new magnetic currents originate on the former 
side. The electric currents developed at any instant upon the 
ascending node side of the sun, run in the opposite direction, 
and tend to weaken the prevailing currents. ‘he residual ex- 
cess of the latter over the former, at any point, and at any in- 
stant, constitutes the new effective magnetic current at that point 
and moment of time (p. 62). Each of these two sets of cur- 
the results of observation which we have signalized (pp. 198, 
199,) are, in general, such as should ensue if the operative causes 
here considered codperate with some action of the planets to 
develop the spots; each tending to enhance the effect of the 
other. 
4 Veh PMING of ViOwW “a 
sight into the probable nature of the process of origination of the 
sun's spots. Conceiving the luminous matter of the sun’s photo 
sphere to be endued with the properties we have nized 10 
