PHILOSOPHICAL TRANSACTIONS 
OF THE 
ROYAL SOCIETY OF LONDON 
Series A, VOL. 201, pp. 551-558. 
ON THE FORMATION OF DEFINITE FIGURES 
BY THE DEPOSITION OF DUST 
BY 
JOHN AITKEN, F.R.S. 
L 0 N|D O N : 
PUBLISHED FOR THE ROYAL SOCIETY 
BY DULAU AND CO., .37, SOHO SQUARE, W. 
CONTINENTAL AGENTS, MESSRS. PRIEDLANDER AND SON, BERLIN. 
1903. 
A 344. 
Price, One Shilling. 
25.8.03 
