ig6 
The Birth and Evolution 
[April, 
Neptune is — 
13,911 X )*=_J 
'1*1x1*05/ 14, 
14,202 
Uranus proje&ed by A — 
r 
12,911 x (1*22 x n)* x i*o5 2 24,918 
B projected by Neptune — 
14,202 x( r j 2Xri °?) 
V ros / 
05 
Venus is of the mass of Saturn — 
1 1 
or 
4 x 3,8oo 
77 x 1*21 x 1*025 
The Earth— 
IX ( — ^ — y 
\r107 x 1*025/ 1 
4 i 5,8 °o _ 359?5 11 
Mars projected by Venus — 
I X I*22 2 X I*05 2 _ I 
415,800x8-8 2,345,112' 
a 
Mercury projected by the Earth — 
22,729 
of the solar mass. 
of the solar mass without 
the moon. 
359.5 11 x 8-8 x V22 ‘ x ro2 5 2 4.943,275' 
Astronomy gives these masses- 
Mercury 
Earth 
Neptune .. 
4,865,751 
1 
359, 5 11 * 
1 
I4,44 6# 
Venus ... 
Uranus 
Earth with Moon 
4 oi ,839 
1 
24,605’ 
355,499 
The differences with my numbers are insignificant. The 
only more considerable is with Mars, yet Astronomy does 
not pretend to give the masses of the moonless planets with 
precision : I also do not insist that the mass I give for Mars 
is exaft. There is a tertiary perturbation, considerable in 
