237 



THERMOMETER 



TABLES 243, 244. 

 CORRECTION FOR TEMPERATURE OF MERCURY IN 



STEM (continued). 



TABLE 243. -Stem Correction lor Thermometer of Jena Glass (0-360 0). 



Degree length i to 1.6 mm.; /=the observed temperature; /=that of the surrounding air 

 one dm. away ; n = the length of the exposed thread. 



* See Hovestadt's " Jena Glass" (translated by J. D. and A. Everett) for data on changes of thermometer zeros. 



TABLE 244. Stem Correction for a so-called Normal Thermometer of Jena Glass (0 100 0). 

 Divided into tenth degrees ; degree length about 4 mm. 



SMITHSONIAN TABLES. 



