A Letter from the Learned and Ingenious Mau- 
rice YVheeler M. A and Re^or of Sibbertoft 
in Northamptonfliire, to the Fuhliiha of thefe 
Trafts, concerning a Movement that meafures 
time after a peculiar manner^ with an Account of 
the Reafons of the faid Motion 
Hon. Sll{, 
THE Relation which I have, and the great Re« 
ipe<a that I bear to the IuqIj QVQttQd Fhilofopli" 
cal Society in Ox for , will ever oblige me to ferve it 
in the meaneft offices, if thereby I may contribute 
the fmalleft Advancement towards that noble Defign 
th^yarein purfuit of. Wherein, forafmuch as an At- 
tempt is vigoroufly (and in the iflue I hope luccesfui- 
ly) carried on, by the communicated Obfervations and 
united Counlels of ingenious and learned Perfons in 
this and other Nations, to improve the knowledge of 
things to the real ufe, or (at leaft) the fober delights 
of mankind by your encouragement ; I have herewith 
( and as my firft tribute, ) prefented to the confidera- 
tion of our Society, the Scheme and Contrivance of a 
Movement , which meafures time indeed by Number, 
Weight and Meafure; but after a manner fo peculiar, 
and in feveral of its properties lo furprizing, and of a 
ftruiture fo unexampl'd j as you your felf (if the inveuw 
tion be worth the owning) can vouch me to be the 
fole Author of. For altho the late Lord Marquis of 
Worcefter is faid to have contriv'd a Watch th^t Ihould 
move upon a declivity, as this (hereafter defcrib'd^ is in- 
tended to do, and Monfieur de Gennes in the Fhilofoph. 
TranfaU, Numb, 140. has given lome account of a ClocI^ 
afcendent on a P/ii/;^ inclin d. ye: neither of them, nor 
any like them, was ever feen by me, and for ought I 
could ever learn, the J^afon of their Motions regains 
I to 
