i8 83.] 
The Velocity of Light . 
577 
through the sun into electromagnetic aCtion may be seen in 
0. s. p., where I speak of Allan Brown’s observations in 
chapter “ Terrestrian Magnetism.” 
3*607 is the i-rioi of the year = (i-^ 6 io 6 )-^(i-t- 59 * 56 ). 
The divisor represents the ascending vapour in the air and 
salt in the sea, the vibration from the centre through the 
solid, the v of the eccentricity of the earth, and the eccen- 
tricity of her orbit ; the dividend the decrease in solar 
attraction through the diameter of the levelled solid of the 
earth, without sea, normal to the orbit. This quantity 
varying with solar distance, and ex- and inclusive of depth 
of sea and height of atmosphere, negative to terrestrian 
attraction on the dayside, and positive on the nightside, 
amounts for the whole sphere or neutrality to— 
47rr 2 -^ (14-6106), 
and for each hemisphere as negative or positive to — 
27jt 2 -Hi-^6io6). 
The 8*959 revolutions are the 1-^40*76 of the year, the 
proportion of the own centrifugality of the atmosphere, ex- 
clusive of its diminution by the own mass of the atmosphere, 
and 4076 2 = 1655 ; the 1^1655 being o. s. p. the mass of 
the outer atmosphere to that of the atmosphere. The outer 
atmosphere is a compressor of essentially eleCtro-magnetic 
nature, without vapour of water, induced by the polar aCtion 
of the earth and the centrifugal and co-attraCtive aCtion of 
the sun to special molecular combinations, determined in 
quantity by the difference of quotients of solar into terres- 
trian attraction at the top and bottom of the atmosphere and 
over sea and land, &c. 
“ It is manifest that the velocity of light and the ratio of 
the units are quantities of the same order of magnitude,” 
but it is also evident that they are not identical. 
The vibratory motion caused by the conducting vapour 
moving from equator to pole by alternate aCtion of the sun 
and of the earth, as constituted in the course of time by that 
inter-aCtion, is resisted by the centrifugal motion of an 
already determined portion of the-air from pole to equator, 
which makes its motion vibratory, eleCtric, the sea emitting 
and absorbing both vapour and air, the one preferentially in 
equatorial, the other in polar regions o. s. p. The resistance 
therefore is — 
