C iv3 
XVI. Quelques Remarques sur la Chaleur , et surV Action des Corps 
qui Vinter cep tent. Par P. Prevost, Projesseur de Pbilosophie 
d Geneve , &c. Communicated by Thomas Young, M. D . 
F. R. S. P- 4°3 
XVII. Of the Rectification of the Conic Sections. By the Rev. 
John Hellins, B. D. F. R. S. and Vicar of Potter s-Pury, in 
Northamptonshire . P* 44 ^ 
XVIII. Catalogue 0/500 new Nebula, nebulous Stars , planetary 
Nebula, and Clusters of Stars; with Remarks on the Con- 
struction of the Heavens. By William Herschel, LL. D . 
F. R. S. P- 477 
Presents received by the Royal Society, from November 1801 to 
July 1802. P* 
Index . P* 537 
/ 
