THE 
PHILOSOPHICAL MAGAZINE. 
AND JOURNAL: 
COMPREHENDING 
THE VARIOUS BRANCHES OF SCIENCE, 
THE LIBERAL AND FINE ARTS, 
GEOLOGY, 
AGRICULTURE, 
MANUFACTURES AND COMMERCE.. 
BY ALEXANDER TILLOCH, 
WV.R.LA, M.G.S. M.R.A.S. Municu, F.S,A. Ep1n. anD Perty; &c. 
“ Nee aranearum sane textus ideo melior quia ex se fila gignunt, nec noster vilior quia 
ex alienis libamus ut apes.””  Jusr. Lirs. Monit. Polit. lib. i. cape Ti 
(eee Oy 
VOL. Lt. Rhett ange 
For JANUARY, FEBRUARY, MARCH, APRIL, MAY, and 
JUNE, 1819. 
SE EEE 
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