of Courfe altered, yet by the Help of this Contrivance ail 
may be reltored, and the Age of an Author, in fomefjrt, 
beafeertain’d. 
The famous Aftronomieal Argument likewife of Sir Ifaac 
Newton , mh\s Chronology, p.§6,%j, &c. may hereby bemore 
particularly enquired into, and confidered ; all which Ufes 
will be fpeedily fhewn and demonftrated by a regular Series 
of Propofitions, in a Treatife, as 1 am well aflured, chat 
is preparing for the Prefs, by the Reverend and Learned 
Mr. George Coflard y Fellow of Wadbam-College , in Oxford. 
Thefe, Sir, are fame of the great Advantages of my 
Globes over others; and I therefore hope they will mer.t 
the Encouragement of a Society founded for promoting 
real and ufeful Learning ; and that the Importation of any 
Globes from abroad may be rendered lefs neceflary, if not 
entirely ufelefs* "l am, 
No. 492. In the Contents Art. XIV. and p. 162. Art. XIV. 
for Mr. Richard Mafon read Charles Mafon, D. D. 
No. 493. p. 213. 1. I. for ou read on. 
With all Gratitude and Ref peel. 
SIR , 
London, Jan. 17. 
1748-9. 
Tour mofi obliged , 
Hujnble Servant , 
MARY SENEX. 
Errata. 
