Tables 194, 195. 



191 



CORRECTION FOR TEMPERATURE OF MERCURY IN THERMOMETER 



STEM {continued). 



TABLE 194. —Stem Gorrection for Thermometei of Jena Glass (0°-360° 0). 



Degree length i to 1.6 mm.; ^=the observed temperature; /= 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 195. —Stem Correction for a so-called Normal Thermometer of Jena Glass (0°-100° C). 



Divided into tenth degrees; degree length about 4 mm. 



Smithsonian Tablcs. 



