(Numb* 337.) 
PHILOSOPHICAL 
TRANSACTIONS. 
For the Tear MDCCXIII. 
The CONTENTS. 
I. Roblematis Kepleriani^ de inveniendo 
vero Motu Tlanetarum , areas tempon 
poportionales in Orbibus Ellipt ids circa Fo- 
corum alterum defcribentium } Solutio Newto 
niana; a £). J. Keill, Afir. Trof. Sav'd. 
Oxon. &X R. S. S. demonjlrata exemplis 
iduflrata. 
II. T>e Inventione Centri Ofcillationis. Ter Brook 
Taylor, Armig. Regal. Societal. Sodal. 
III. Epiftola 2). Jofephi Valletta Nobilis Neo- 
politani, ad V. Richardum Waller, Armig . 
Reg. Societ. Sec. de Jncendio JsX Eruptione 
Montis Veluvii, Anno MDCCVII. 
IV. De 
a 
