CONTENTS, *i* 



VI I. Obfervations on the Places of the Georgium Planet, fhade 

 at Edinburgh with an Equatoreal Injirument. By 

 Mr John Robifon, - 37. 



VIII. Anfwers to the Objections of M. de Luc, with Regard 



to the theory of Rain, By Dr James Hutton, 39, 



IX. Account of a Dijlemper, by the common People in England 



vulgarly called the Mumps. By Dr Robert Hamilton, 59. 



X. A Botanical and Medical Account of the ghtaffia Simaruba, 



or Tree which produces the Cortex Simaruba. By 

 Dr William Wright, - 73, 



XI. On the Motion of Light, as affeCted by ref ratling and re- 



flecting Subftances, which are alfo in Motion. By 

 Mr John Robifon, - 83. 



XII. Demon/1 rat ions of fome of Dr Matthew Stewart's Gene- 



ral Theorems. By the Reverend Dr Robert Small, 112. 



XIII. Remarks on the AJlronomy of the Brahmins. By Mr John 



Playfair, - - 135. 



XIV. On the Refolution of Indeterminate Problems. By Mr 



John Leflie, - - 193. 



XV. A DiJJertation on the Climate of Rujfia. By Dr Mat- 



thew Guthrie : With two Letters from M. iEpinus, 213, 



II. 

 Papers of the Literary Class. 



I. An Account of fome extraordinary Structures on the Tops 



of Hills in the Highlands j with Remarks on the Pro- 

 grefs of the Arts among the ancient inhabitants of Scot- 

 land. By Mr Alexander Frafer Tytler, 3* 



II. Remarks on fome P off ages of the fixth Book of the Eneid. 



By Dr James Beattie, - $$ Q 



III. An 



