RICHARDS AND WELLS. — TRANSITION TEMPERATURE. 



437 



Reading in salt 32.486° in ice .054° 



Correction, calibration — .002 .000 



" exterior pressure — .002 — .001 



" interior " +.039 +.009 



Corrected reading in ice —.062 .062° 



32.459° 

 Correction, fundamental interval +.023 



32.482° 

 Correction, hydrogen scale —.104 



32.378° 



Eleven such observations were made, with the help of four very ac- 

 curately standardized thermometers of the finest possible workmanship. 

 Since the salt was essentially the same in each case, these are grouped 

 below according to the instruments. The question no longer concerns 

 the accuracy of the temperature, but it concerns rather the accuracy of 

 the several thermometers. If they can be shown to be in substantial 

 agreement, the certainty of the reference to the international standard 

 will be correspondingly assured. 



FINAL DETERMINATIONS. 

 (Hydrogen Standard.) 



Baudin 15200 (12) 32.379° 



(13) 32.380° 



(14) 32.377° 



(15) 32^° Average> 3S , 3 _ 90 



Baudin 15275 (16) 32.385° 



(17) 32.386° ™™ ro 



v ' Average, 32.385° 



Baudin 15276 (18) 32.378° 



(19) 3^376° Averagej 3237r 



Tonnelot 11143 (20) 32.380° 



(21) 32.381° 



(22) 32.386° 



v ' Average, 32.382° 



Total Average 32.381° 



Correction (footnote, p. 434) +0.002 



Final result 32.383° 



