192 



Tables 196-199. 

 THERMOMETERS. 



TABLE 196. — Oas and Mercury Thermometers. 



If fa, fn, ico2, ^16. ''69, ^r, are temperatures measured with the hydrogen, nitrogen, carbonic acid, 

 16'", 59'", and " verre dur " (Tonnelot), respectively, then 



ta—h — — j^^ji — [— 0.61859 + 0.0047351./— 0.000011577./2]* 

 /n— /t= '°°qq2 [—0.55541 + 0.0048240./ — 0.000024807/2]* 



tco2— /t = <'°°~^)'^ [—0-33386 + 0.0039910./— 0.000016678./2]* 

 100- 



'u — /i6= ^'°° ^' [— 0.67039 + 0.0047351./ — o.ooooi 1 577./2]t 

 100- 



/u — /69= ( i°P~ ^)^ [—0.31089 + 0.0047351./ — O.OOOOI I 577./2]t 



lOO'' 



* Chappuis ; Trav. et Mem. du Bur. internal, des Folds et Mes 6, 1888. 



t Thiesen, Scheel, Sell; Wiss. Abh. d. Phys. Techn. Reichanstalt, 2, 1895; Scheel; Wied. Ann. 58, 1896; D. Mech. 

 Ztg. 1897. 



TABLE 197. ta - 1,8 (Hydrogen -16"i), 



TABLE 198. tu — tgg (Hydrogen- 59'")- 



TABLE 199. (Hydrogen — 16"'\ (Hydrogen — 59"i). 



All compiled from Landolt-Bornstein-Meyerhoffer's Physikalisch-chemische Tabellen. 

 Smithsonian Tables. 



