CONTENTS. 
On a new Method of treating Factorials and Figurate Num- 
bers... vs os wi ar “3 «- 412 
Olservations on Larch: together with two Experiments of the 
Strength and Resilience of the Timber, and Size of largest Tree 
cut in 1817, or growing in 1819. By Joun, Duke of Atholl. 
419 
On a new Method of applying the Power of Man to the moving 
of Machinery, with at least six times the Effect that can be 
produced by mere muscular Exertion. : .. 425 
On the different “ Rates” of PENNINGTON’S Ast dnbnieat Clock, 
at the Island of Balta in Zetland, and at Woolwich Common, 
Kent. By Dr. OLintHus Grecory. =i oe 426 
On the Aggry Beads of Africa. me ¥) 445 
Notices respecting New Books. 46, 140, 223, 278, 367, 449 
Proceedings of Learned Societies. 55, 146, 228, 289, 385,460 
Intelligence and Miscellaneous Articles. 63, 150, 232, 301, 386, 
462 
List of Patents. i 2 Joa 72, 315, 396, 468 
Meteorological Tables, 7580, 157—160, 237—240, 317— 
320, 397—400, 469—472 
