A D H 



A D H 



T A B L E III. 



The force of aJhcfion of difT-rent folids, in diilw t.5 inch in diameter, with water and other fluids, at 

 Fahrenheit's thermometer, detcnnined in grains. 



If this Table may be at all depended upon, the refults are very extraordinary, as will appear at once by arranging the 

 articles in the feveral columns according to the order of their adhefion. Thus 



T A B L E IV. 



Hence it is manifeft that the ftrength of adhefion is not 

 owing either to the fpccific gravity of the folld or of the 

 fluid ; nor is it at all more confiftent with the acknowledtjcd 

 order of chemical affinities. Why lead and brafs ftiould 

 generally be the flrft in each column, and why fulphur and 

 wax fliould be interpofed between thefe and the reil of the 

 metals, is wholly unaccountable, and contradiftory to all 

 known chemical fafts. The column, at the head of 

 which is the acetite of lead, contains befides feveral pecu- 

 liar difficulties. The plates of zinc, iron, and tin, would 

 begin to decompofe this fait as foon as they came in ccm- 

 taft with it, and would in confcquence be fuperficially 

 (Covered with lead j the acquired weight of lead, thertfocc. 



and the lofs of fubftaiice fuftained by the metallic platcc, 

 would be two powerful difturbinj caufcs in the performance 

 of the experiment ; befides, as each of the j>lates would 

 be coated with lead, the greateft part of the adhefive force 

 ought to be reckoned as belonging to the adhefion of lead 

 to acetite of lead, and in confequcnce the three corrcfpond- 

 ing numbers in Tab. III. ought to be nearly equal, which 

 they are not ; the fame objeftions, and perhaps with ftill 

 greater force apply to the column whofe title is acetite of 

 copper, on account of the more perfcifl adhefion of the ie» 

 vived copper to the furface of the zinc rfnd iron plates. 



Li the Journal dc Phyfiquc (vols. xv. xvi. andxix.) is a 



feries of papers by M. Dutour, on the fubjcdt of capillary 



JT 2 attiadion. 



