TABLES 279, 280, 



249 



CORRECTION FOR TEMPERATURE OF MERCURY IN THERMOMETER 



STEM (continued). 



TABLE 279. - Stem Correction for Thermometer of Jena Glass (0-360 0). 



Degree length i to 1.6 mm.; /=the observed temperature; t 1 that of the surrounding air 

 one dm. away; ;/ = 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 280. 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. 



