16 



Messrs. C. W. Waidner and F. Mallory on 



Table IV. 



Platinum Thermometer in Ice. 



Time. 



Coils. 



Bridge- Wire. 



Temperature 

 of Coils. 



E . 



12.20 



0, D, F, 

 Coil cor. ... 



= 260 

 +•017 



B.W. Eeadg.-l-556 



Cal. cor. +-011 

 Zero cor. —'016 



2029 

 Temp. cor. + -020 



258-476 



12.27 



C,D,G,H ... 

 Coil cor. ... 



=255 



-•on 



B.W.Eeadg.+ 3-506 

 Cal. cor. --025 

 Zero cor. — *016 



20-29 

 Temp. cor.+ 019 



258-473 



12.32 



C,D,F, 



Coil cor. ... 



=260 

 +•017 



B.W.Eeadg.- 1-558 

 Cal. cor. +-011 

 Zero cor. — - 016 



20-30 

 Temp. cor. + 020 



258-474 



12.40 



C,D,G, H... 



Coil cor. ... 



=255 

 -011 



B.W.Eeadg. +3-503 

 Cal. cor. - -025 

 Zero cor. — - 016 



20-33 

 Temp. cor. + -022 



258-473 



12.50 



C,D,F,H ... 

 Coil cor. . . . 



=265 

 +•016 



B.W.Eeadg. -6600 

 Cal. cor. +-046 

 Zero cor. —'016 



20-34 

 Temp. cor.+ 023 



258-470 



12.55 



C,D, F 

 Coil cor. ... 



=260 

 + •017 



B.W.Eeadg. -1-563 

 Cal. cor. +-01 1 

 Zero cor. — 016 



20-35 

 Temp. cor. + -024 



258-473 



1.05 



FI, C 

 Coil cor. ... 



= •260 

 -•005 



B.W.Eeadg. -1-544 



Cal. cor. -(--Oil 

 Zero cor. — "016 



20-37 

 Temp. cor. + -025 



258-471 



1.15 



FI, D,E,F,G,H=255 

 Coil cor. ... +-179 



B.W.Eeadg. +3-306 

 Cal. cor. --024 

 Zero cor. — -016 



20-38 

 Temp. cor. + -025 



258-470 



1.20 



0,D, F 



Coil cor. . . . 



= 260 

 + •017 



B.W.Eeadg. -1-566 

 Cal. cor. +-01 1 

 Zero cor. — -016 



20-39 

 Temp. cor. + -026 



258-472 



Mean 258-472 



Note. — In this determination of E a double-wall vessel was used, with ice 

 in both inner and outer compartments. Outer vessel wrapped with heavy 

 boiler-felt. 



uniformity of temperature. The thermometers were inserted 

 between the wrappings touching the glass of the barometer. 

 The temperature of the standard scale was taken by another 

 similar thermometer. A series of measurements of the baro- 

 metric height were made by one observer while the other 



