THE GREATEST GUIDE TO PHILOSOPHY

THE favourable reception the Orrery has fulfilled with from for eachſons on the firſt diſtinction, and from Gentlemen and Ladies usually, has induced me to incorporate to it ſeveral new advancements as a way to give it a diploma of Perfection; and diſtinguiſh it from Many others ; which by Piracy, or Imitation, might be released to the Pu