lviii Appendix. 
of the solar rotation, which is far more rapid at. the equator than near 
the poles, we shall probably also find the clue to the problem of solar trade 
winds. 
I fear I have exhausted your patience. I have certainly exhausted the 
time at my disposal either for the preparation or delivery of this address. 
My subject, however, remains quite inexhaustible ; and, with the eclipse of 
December last, at least one-half of my notes must be remitted as material for 
a future address. 
