372 



BABCOCK. 



Calibration Measurement 12 at 121°.9 C. 



Time Ohms 



in Obs. 



Min. Therm. 



8.91155 



1 1217 



2 1275 



3 1333 



4 1400 



5 1460 



6 1516 



7 1572 



8 1624 



9 1680 



10 1745 Switch On. 



11 2625 



12 3383 



13 4061 



14 4679 



15 5302 



16 5884 



17 6446 



18 7018 



19 7571 



20 8118 



21 8672 



22 9205 



23 9750 



24 9.00268 



25 0781 Switch Off 



26 0478 



27 0285 



28 0167 



29 0096 



30 0041 



31 0001 



32 8.99962 



33 9918 



34 9890 



35 9879 



36 9860 



37 9847 



38 9835 



39 9818 



40 9805 



41 9801 



42 9789 



43 9775 



44 9771 



45 9762 



46 9745 



47 9740 



29 May, 1916. 



Std. Ohm Temp. Start: 

 Std. Cell Temp. Start: 

 Oil Bath 5Temp. Start: 



25°.7 C. End 

 23°.5 C. End 

 13.08932 End 



25°.6 C. 

 23°.3 C. 

 13.08922 



13.08925 Ohms Std. Therm. 



P. D. across 



Standard Ohm 



in Volts. 



0.40919 

 0.40918 

 0.40917 

 0.40916 

 0.40915 

 0.40913 

 0.40913 

 0.40912 

 0.40911 

 0.40910 

 0.40909 

 0.40906 

 0.40903 



Ro 

 Ri 

 Ra 

 R3 



P. D. across 



Small Coil of 



Volt Box in Volts. 



1 



10484 

 1 . 10479 

 1 . 10476 

 1 . 10465 

 1 . 10465 



1 . 10459 



1 . 10458 

 1 . 10456 

 1 . 10454 

 1 . 10453 

 1 . 10452 

 1 . 10444 

 1 . 10441 



8.91157 

 8.91745 

 8.99948 

 8.99709 



10 Min. 

 15 Min. 

 25 Min. 



Heating Period 



(t2 — tl) 



in Seconds. 



900.10 



