Newellian Sphere. 103 
Green, near London, is said to have constructed, to navigate 
the air, a machine similar in principles to mine, though of small- 
er dimensions, and that from the result of several experiments 
already made, he prefers ascending in a still moonlight night, 
the air being then less troubled by currents. But nothing, 
Sir, flatters me more than the impartial analysis made of my 
Memorial, by the scientific Doctor Pascalis, in your excellent 
repertory of the arts and pees a work so generally es- 
teemed in Europe and in ena ec 
Yours, &c. E. C. GENET. 
ArT. XIL—Newellian Sphere. 
Tue machine to which the above appellation has been 
given, is designed to show, by mechanical repres entation, the 
motions of the planetary bodies. It was originally the con- 
trivance of: Mr. Theodore Newell, of Vermont, who be- 
ing in limited circumstances, enjoyed, in consequence, but 
w opportunities for scientific acquirements. An accident, 
which occurred to him several years since, deprived him, in a 
great degree, of the use of his limbs. Being thus rendered 
incapable of labouring in his occupation, which was that of 
a farmer, he commenced, at an advanced age, the construc- 
-tion of his first machine, which was merely a simple contri- 
vance, showing the motion of the earth around the sun, with~ 
out giving however, its axis any inclination to the ene of 
h it describes: By the assistance which he re- 
aoe periods, from the liberality of different 
rege oe as well as from information communicated, and 
new ideas occasionally suggested by men of science, who had 
an opportunity of examining his invention, as well as from 
his own determined perseverance in accomplishing his object, 
the machine was brought, by a series of improvements, to 
that degree of perfection which it possessod when the invent- 
or arrived with it in Middletown, Connecticut, in the fall of 
1825. At that place, and at Hartford, he succeeded, by his 
exertions, in interesting several gentlemen i in the success of 
his invention. An association was soon formed, with the re~ 
quisite funds for the construction of machines. This associa- 
tion engaged a mechanic, of competent abilities, to execute 
