Memoir of Charles Alexander Lcsueur. 



189 







Coefficient of the increment of resistance. 



for 1 



o 



0«4444 

 110-518 



004021. 



In this manner the following table was constructed, to which 

 we add a column for use with Fahrenheit's thermometer. 



[Coefficient of increment 

 of resistance for 1° C. 



Mercury, 



Platinum 

 Gold, . . . 

 Zinc, . . . 

 Silver 



Cadmium, 



Copper, 



Lead, 



Iron, 



Tin of commerce, 



Tin, purified. 



OD01040 

 •001861 



•003391 



•008675 



■004022 



•004040 



•004097 

 .004349 

 •004726 

 •005042 

 •006188 



For 1° Fah 



0-000578 

 11034 

 •001881 

 •002042 

 •002234 

 •002244 



•002276 

 •002416 



002625 



•01)2801 



•008438 



From this table and that of the conducting powers before ob- 

 tained, is constructed a farther table copied into this Journal, 2nd 

 ser., vol. ii, p. 255. 



The principal results of the author's researches on the con- 

 ducting powers of liquids and other later researches connected 

 with the same subject, will be given in the next number of the 

 Journal. T TT T 



J. H. Lane. 





Art. XV, 



4 Memoir of Charles Alexander Lesuear. Read 



before the American Philosophical Society, at the stated meet- 

 ing, on the 6th of April, 1849 ; by George Ord. 



At the close of the eighteenth century, the Institute of France, 

 ever actuated by the desire of advancing the sciences, which are 

 the basis of the durable glory of nations, conceived the project of 

 a voyage of discovery in" the southern parts of the Eastern hem- 

 ls phere. Great Britain had done much for geography and navi- 

 gation. She had recently founded a colony in New South Wales, 

 singular in its conception, unexampled in its success. She was 

 spreading her empire over various parts of Terra Australis, now 

 termed the Fifth Continent ; but still there was an extensive field 

 °pen for geographical enterprise, as a large portion of the southern 

 coasts of that immense country was yet unexplored. 



The French government after a succession of extraordinary 

 commotions, now began to assume some consistency ; and the 

 nation, always sanguine in its anticipations, hailed the event as 

 an earnest of future prosperity. Bonaparte was elevated to the 

 dl gnity of first Consul ; and although the wars which had called 



