CUBICAL EXPANSION OF SOLD)». 



13 



Selenium (com. powde 



Silicon (cast). 

 Silver 



Do. (cast) . 



Do 



Do 



Do 



Substance. 



o! 



Silver-platinum alloy (33'4 

 "lo by mass, and 19-65 %, 

 by vol, of Pt) 



Sodium. 

 Do. . 



Do. . 



Solder (2 parts Pb, 1 Sn.) 



Speculum Metal 



Steel (not tempered) . . . 



Do. (tempered yellow) . 



Do. (French cast, tem- 

 pered) 



Do. (French cast, an- 

 nealed 



Do. (English cast, an- 

 nealed) 



Do. (wire drawn) . 

 Do. (soft) 



Do. (bar at max. soft- 

 ness) 



Do. (same bar at max. 

 hardness) 



Sulphur 



Do 



Do. (Sicilian crystal). 



Do. (crystallized [ 



from solution ] 



in Carbon Bi--{ 



sulphide) ... I 



I 



ax 10" 



2086 

 .5426 

 5587 



4246 

 14178 



20510 

 202S0 



/(xlO" 



3ion 



10458 



-83804 



15222 



4050 

 2205 



3220 

 52000 



22730 

 25730 



ex 10"' 



Mean Co- 

 efficient X 10" 



2280 



265880 



7878840 § 



50440 



—146-73 



Temperature 



Range. 



(°C.) 



13O70 

 16440 

 17510 

 2340 

 5831 

 5808 

 5516 

 5573 

 5792 



4568 

 16674 

 2,3670 



21630 



7524 

 5799 

 3238 

 4158 



4086 



3339 



3331 

 3768 

 3090 



3270 



4260 



20244 

 21220 

 24380 

 35410 



0- 

 0- 

 0- 

 0- 

 0- 

 0- 

 5- 

 0- 

 0- 



0- 

 0- 

 0- 



■ 20 



■ 60 

 100 

 ■100 

 -100 

 ■100 



■ 26 

 •100 

 -100 



-100 



- 40 



- 90 



0— 50 



-100 

 -100 

 -100 

 -100 



0—100 



0-100 



-100 

 -100 

 -100 



0—100 



0—100 

 0— 78 

 78^ 

 0- 

 0- 

 0- 

 0- 



-115 

 -100 



- 20 



- 60 

 -100 



Observer. 



Spring 



Fizeau 



Matthiessen 



Fizeau 



Plantamour&Hirsch 



L. Pfaff 



Rodwell 



Matthiessen 

 de Lucchi. 



Hagon 

 Smeaton 



u 



Lavoisier & LaPlace 

 Fizeau 



Glatzel 



Calvert, Johnson & 

 Lowe 



Kopp 



Fizeau 

 Spring 



§ These constants are for the formula .— Vt =7,8 (l -f a (« — 78) -f 6 (i — 78)' ) 



