W. A. Norton on Molecular Physics. . 203 
cease to be sufficient to effect the dispersion of these columns,— 
must lie nearest the equator in that hemis : 
tis to be observed that spots may arise from electric dis- 
charges along the photospheric lines of polarization, although 
no demagnetizing action may come into operation ; and it is even 
possible that, indirectly, an increase of magnetic intensity may, 
in special cases, codperate with such currents. 
Noie.—Since the foregoing was written, the line of investigation here 
entered upon has been followed up, and new and important general results 
obtai Oue of the principul results is: that the density or quantity 
of matter of the sun’s photosphere, in the region of the spots, experi- 
~ 
two dis- 
tain distinctions, and possible differences of result. We 
seen that two dissimilar molecules have an affinity for each other 
electric s ark, may increase the natural force of sme PY tn 
have initiated. In fact all the various 
ized by their natural mutual action more or less modified, 
