On Deal Pendulum Rods, 31 



the contrary*extreme, but the greatest rate of gaining was 

 only of short duration : hence it may be supposed, that the 

 wood imbibed moisture rapidly as soon a9 the dry season, 

 was over. I am, sir, your humble servant, 



Ez. Walker, 



Table of (he greatest Variations in the daily Rates of thres 

 Clocks with Deal Pendulum Rods, 



Greatest varia- Greatest an- 



Time of the year when the greatest 

 los^ and gain in the daily rate of the 

 clock took place. 



1798. 

 1799- 

 1800. 

 I SOI. 



1802. 

 1803. 



1804. 

 1S06. 



1806. 

 1807. 



1770 

 1771 



1767. 

 1768. 



Feb. 

 Sep. 

 Feb. 

 July 

 Feb. 



4th and the 



14th 



24 th 



25th 



4th 



l< 



23 



Aug. 18th 

 Jan. 7th 

 July lMh 

 March 7 th 

 Oct. 11th 

 Feb. 1 8th 

 ijSep. 25 th 



6th, 

 15th, 

 25th, 

 26th, 



5th, 

 «7th, 



8th, 

 14th, 



9th, 

 13th, 

 23d, 

 29th, 



ion in the daily 

 •ate of the 

 lock in twelve 

 nonths. 



nual varia- 

 ion, in the 

 ate of the 



clock. 



+ 



-f 



+ 



+ 



73" \ 

 10 / 



} 

 I 



59 \ 

 51 / 



} 

 } 



4S 

 16 

 33 



48 



4-83" 



3*67 



6-4 



6-1 



5-64 



5-81 



Another pend, with a ivoffden rod put to the same clock. 



Between Jan. 24 tb and the 25th, 



Do. June 20th 22d, 



Do. Dec. 27 & Jan. 1, 1807, 

 Do. Auo-. 7th and the 9th, 



5-39 



4*22 



The Rev, Francis Wollaston's Clock*. 

 Between Dec. 22d and the 30thj— 1-9 

 Do. June 1st 18th 1 + 2-4 



}| 



From Lvdlam's Observations, p. 44 



Between Oct. 30th &Nov. 13th, 

 Do. May 1 8th and the 3 1 st 



— 2-2 

 + 3*2 



} 



4*3 



54 



* Philosophical Transactions abridged, No. 50, p. 21$. 



VI. An 



