You 



Feehuary 1805. 



No. 81. 



Puhlished the Last Day of every Mo?ilh, 

 [PRICE 2s. 6d.] 



THE 



PHILOSOPHICAL MAGAZINE 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 

 THE LIBERAL AND FINE ARTS, 

 AGRICULTURE, MANUFACTURES, ' 



COMMERCE. 



NUMBER LXXXI. 



For FEBRUARY 1S05. 



EMBELLISHED AND ILLUSTRATED Willi THE FOLLOV/IMG 

 EN'GRAVINGS: 



I. A Portrait of Dr. Hutton; engcavcd by Ksight, from 



a I>ikeriess painted by MifS BYRNt. 

 a. The PiramlLs nmuta; engraved by Lowry. 

 3. The PeramlU's oLesula; also engraved by Lo\V7.Y, 



^,>?it 



BT /ILEXANDER TILLOCH,. 



^^HOUORAKY MP.MBKR OF THE ROYAL IftlSH ACADEMl", &0. SCC, &C. 



. ""-"^ m 



LONDON: 1^^ 



PrinUd Vy R. T.xyJor tim! Cj. BUcK-Honc Cuwt', FUet Street, ^^^ 



FUU A. TILLOCH : ^y'4\\ 



And Fold by Mesrrs.-RicuAnnsoN; Cadell and Davies; T.oxo- b^x^^ 

 MAN, HuKST, Ret^s, atidOuuiR; Svmoxus; Mvuray; HioH-Wi!,,^^ 

 LEY; Vhumor and IIcjou; Hakding; London: Bell :lnd^l■:;^X< 

 ?^fl BtiADFU'iK, Edinburgh; Brash and Reid, and D. Nevin, w. A 

 i<^ Cla=gow J and GiLCKiir and Hodges,' Dublin. ^'<-' ■V^ 



