OUTLINES 



OF 



NATURAL PHILOSOPHY, 



BEING 



HEADS OF LECTURES 



DELIVERED IN THE UNIVERSITY OF EDINBURGH, 



BY 



JOHN PLAYFAIR, 



I'KOFESSOR OF NATURAL PHILOSOPHY IN THE UNIVERSITY OF EDINBURGH, 



FELLOW OF THE ROYAL SOCIETY OF LONDON, 



SECRETARY OF THE ROYAL SOCIETY OF EDINBURGH, 



AND MEMBER OF THE ROYAL MEDICAL AND PHYSICAL SOCIETIES 



OF EDINBURGH. 



VOL. II. 



SECOND EDITION. 



EDINBURGH : 



Printed by Abernethy $ Walker, 



POR ARCHIBALD CONSTABLE AND COMPANY, EDINBURGH, 



AND LONGMAN, HURST, REES, ORME & BROWN, 



AND CADELL & DAVIES, LONDON. 



1816. 



