250 Tables 281-282. 



TABLE 281. — Standard Calibration Curve for Pt— Pt. Rh. (10% Rh.) Thermo-Element. 



Giving the temperature for every loo microvolts. For use in conjunction with a deviation curve determined by cali' 

 bration of the particular element at some of the following fixed points: 



Water 



Napthalene 



Tin 



Benzophenone 



Cadmium 



Zinc 



Sulphur 



Antimony 



Aluminum 



melting-pt. 



TABLE 282. —Standard Calibration Curve lor Copper — Constantan Thermo-Element. 



For use in conjunction with a deviation curve determined by the calibration of the particular element at some of the 

 following fixed points: 



Water, boiling-point, ioo°, 4276 microvolts; Napthalene, boUing-point, 217.95, 10248 mv.; Tin, melting-point, 231.9, 

 11009 mv.; Benzophenone, boiling-point, 305.9, 15203 mv.; Cadmium, melting-point, 320.9, 16083 mv. 



E. 

 micro- 

 volts. 



o. 

 100. 



200. 

 300. 

 400. 

 500. 

 600. 

 700. 

 800. 

 900. 

 1000. 



1000. 2000 



6000. 



8000. 



Temperatures, °C. 



94.07 

 96.23 



98.38 



100.52 

 102.66 



104.79 

 106.91 

 109.02 



111.12 

 113.22 

 115.31 



115-31 

 117.40 

 lig.48 

 121.56 

 123.63 

 125.69 

 127.75 

 129.80 

 131.84 



133-88 

 135-91 



194.62 

 196.51 



19S.40 

 200.28 

 202.16 

 204.04 

 205.91 

 207.78 

 209.64 

 211.50 

 213.36 



E 



micro- 

 volts. 



o. 

 100. 

 200. 

 300. 

 400. 

 500. 

 600. 

 700. 

 800. 

 900. 

 1000. 



E 

 micro- 

 volts. 



o. 



100. 

 200. 

 300. 

 400. 

 500. 

 600. 

 700. 

 800. 

 900. 

 1000. 



16000. 



18000. 



Temperatures, oC. 



213.36 

 215.21 

 217.06 

 218.91 

 220.7s 

 222.59 

 224.43 

 226.26 

 228.09 

 229.92 

 231.74 



E 



micro- 

 volts. 



o. 

 100. 



200. 

 300. 

 400. 

 500. 

 600. 

 700. 

 800. 

 900. 

 1000. 



Cf. Day and Sosman, Am. Jour. Sci. 29, p. 93, 32, p. 51; 

 Smithsonian Tables. 



; ibid. R. B. Sosman, 30, p. i. 



