106 Newellian Sphere. 
motion drawn from the train of wheels just mentioned. A 
spindle, with its extremities resting in the braces of the annu- 
al circle, regulates the equable motion of the two wheels be- 
tween which the earth is supported, and has attached to it 
two pinions, one of which gives motion, through the inter- 
vention of several small pinions, to a wheel with a level or 
inclined face ; moving apon which, jas carried by the oth- 
ér pinion, is the moon’s wheel, the moon itself being borne 
upon an arm or vector, extending from the wheel over the 
earth. By this contrivance, the revolution of the moon is 
rformed in the requisite time, the mean inclination of its 
orbit to the ecliptic, likewise the mean motion of its nodes in 
antecedentia is shown. On the main axis, and without the 
annual circle on the south, is a combination of 5 wheels and 
10 pinions, constituting the train belonging to the superior 
jlanets. To each wheel of this train there is attached a 
pagers arm, or vector, extending over to the ecliptic 
ee near the extremities of which the planets are ‘placed. 
he first wheel, or wheel of Mars, in the combination, is impel- 
led by a driver attached to the annual circle, that in its turn 
operates as a driver to the wheel of the asteroid Ceres, and 
that again gives motion to Jupiter, and from thence motion 
‘is cainnaacuted to Saturn, and through Saturn to Herschel. 
The inferior planets are moved by a combination of 3 wheels, 
and pinions similar to those just described, placed upon the 
main axis within the annual circle, and near to the arcti¢€ 
brace. These planets are borne upon arms extending from 
their respective wheels, in the manner represented for the su- 
perior planets. ‘These arms or vectors are formed of brazen 
tubes. A longitudinal slit, or opening, of sufficient length, is 
made at the extremities of each. A slede to which the plan- 
et is attached, moves in this opening by the action of a wire 
passing from it through the whole length of the tube to the 
main axis, when it conforms to a groove in the cireumference 
of an eccentric wheel. ee this contrivance a reciprocating 
elie mean relative distances from the emblematic sun. 
This relation is not maintained in the superior planets, ow- 
ing to the too great dimensions it would give to the machine. 
‘he relative maguitudes of all, however, are shown, save the 
