AN
EPITOME of ASTRONOMY,
WITH
THE NEW DISCOVERIES:
INCLUDING AN ACCOUNT OF THE
Eídouraníon,
OR
TRANSPARENT ORRERY;
(INVENTED BY A. WALKER)
AS LECTURED UPON BY HIS SON,
W. WALKER.
STARS TEACH AS WELL AS SHINE!
YOUNG.
OS HOMINI SUBLIME DEDIT; CŒLUMQUE TUERI
JUSSIT, ET ERECTOS AD SIDERA TOLLERE VULTUS.
OVID MET. 1. 85.
THE FOURTEENTH EDITION.
Ipswich;
PRINTED FOR THE AUTHOR,
BY BURRELL AND BRANSBY;
AND SOLD BY J. ROBSON AND W. CLARKE, BOND-STREET;
AND G. KEARSLEY, FLEET-STREET, LONDON.
1800.
AN
EPITOME of ASTRONOMY;
AS ILLUSTRATED BY THE
Eídouraníon,
OR
TRANSPARENT ORRERY.
This elaborate Machine is 20 feet diameter: it stands vertical before the spectators; and its globes are so large, that they are distinctly seen in the most distant part of a Theatre. Every Planet and Satellite seems suspended in space, without any support; performing its annual and diurnal revolutions without any apparent cause. It is certainly the nearest approach to the magnificent simplicity of nature, and to its just proportions, as to magnitude and motion, of any Orrery yet made: and besides being a most brilliant and beautiful spectacle, conveys to the mind the most sublime instruction: rendering astronomical truths so plain and intelligible, that even those who have not so much as thought upon the subject, may acquire clear ideas of the laws, motions, appearances, eclipses, transits, influences, &c. of the planetary system.