G. Hinrichs on Planetology. 
consequently “a —- ee 
t 
or for the most distant planets their distances approach to a 
geometrical series whose quotient is the basey. But this law) 
again in part be interfered with on account of the action 
sistance on the completed system, which, on account 
higher age, has drawn the most distant planets compara 
nearer to the sun than the less distant ones, so as to dimant 
above quotient 7. 
gain, if ¢ is sufficiently small—or the planet sufficient! 
the center—the exponential series contained in (38) 8 
convergent, so that perhaps the approximation may be su 
if only the term of the first order is taken, so that (88) bet 
A and B representing constants, ; 
: Qc A+B. bo oe oe ee (6 
hence a4, = A+B(t+1), 
hig => ALB. (t+-2), etc. 
ee) Oy — 8,89 841 =B, a 
i.e. the innermost planets have a tendency to become equidist 
) 
Saturn to Jupiter as 1°85 to 1. 
Uranus “ Saturn _ SO tk 
Neptune “ Uranus x 157% 8 
For Saturn—Jupiter this proportion is still less than 7 = 
because Jupiter both on account of its age and mass has 
ratio is almost equal to 7 = 2, while for Neptune- ran 
less again, on account of the higher age of the first. _ 
Distance. Difference 
ars, - - - 152°4 524 
Bante hs 2 a 1008 26°7 
Venus, “ is - - 723 33°6 
Mercury, Bette - 3 
8°7 
We see how Mars, Earth and Venus follow Bode’s law 
for one-half of 52°4 is 26-2, or very nearly 26°7—but th 
between Venus and Mercury is 33°6 instead of 4 of 267 
is difference might be considere consequence 
but we know that it is principally due to the sma® 
Mercury. 
ae 
[To be concluded.} 
