BE ee eee eee aE ea, eee eee 
a 
W. Ferrel on motions of Fluids and Sclids, ge 27 
ArT. V.—The ee of Fluids and Solids relative to the Earth's 
Si Tipe by W. Ferret, Assistant in the Nautical Almanac 
° 
he 
of the atmosphere near the tropics than at the equator and the 
poles, and of the greater pressure generally in the northern hem- 
isphere than in the southern, to account for the motions of 
revolving storms in both hemispheres, from the equator towards 
the poles i in the parabolic paths, and to establish completely their 
gyratory character; none of which phenomena had ever been 
satisfactorily accounted for by any of, the theories which do not 
take into account the effect of the earth’s rotation. It has been 
suggested by several that a paper more popular in its character, 
although less complete, which should contain only the more 
essential parts of the analysis, and in which familiar illustrations 
should supply in some measure the more difficult parts of the 
cna would be more satisfactory to many readers. It is pro- 
, therefore, in this paper, in consequence of the general 
Steet taken in the subject, to treat it acecording to this sug- 
gestion, and to give only the most essential part of the analysis, 
showing the influence of the earth’s rotation, which being 
upon well known principles, instead of being deduced from gen- 
eral fundamental equations, is Very BPE but i is sufficient for a 
general understanding of the su 
I. The effect of the earth's rotation mck moving bodies at tts 
surface ; 
2. If a body were set in motion upon the surface of the sath 
supposed to be entirely without friction, it would not in ae 
move in the circumference of a great circle around thee 
would be continually deflected he one side by a force | 
from hs earth’s rotation 
the radius of the earth, 
y the Hie distance in are, 
* 
ee te oe body earth’s surface 
from the axis of rotation, and r sin onthe eninge = 
