190;}.] On the Scale of the Oxyrjai Thermometer. 389 



II. Ice Point, December 22, 1902. 



Pressure on gas 483-8 mm. 



Temperature of dead space ... 17'9 C. 



Pressure coefficient 0*0036713 



Constant 43*993 



Vapour Pressures of Liquid Oxygen. 

 December 22. 



Pressureon gas in thermometer 147-55 mm. 147-60 mm. 



Temperature of dead space 18*7 C. 18-9 C. 



Temperature of stem 125-0 125*0 



Vapour pressure of oxygen 300-0 mm. 301-5 mm 



Temperature on oxygen scale 81-47 81-47 



Deviation from helium scale 0-62 0< 72 



December 29. 



Pressure on gas in 



thermometer 146-12 mm. 146-52 mm. 147-22 mm. 148-42 mm. 



Temperature of dead 



space 15-4C. 15-4 C. 15-9 C. 16-1 C. 



Temperature of stem 104 -0 104-0 115-0 130 0< 



Vapour pressure of 



oxygen 283'6 mm. 291'4 mm. 297'1 mm. 332-2 mm. 



Temperature on oxy- 

 gen scale 80-74 80-95 81-34 82 3 '00 



Deviation from he- 

 lium scale 1-00 0-99 0-77 0-99 



III. Ice Point. January 2, 1903. 



Pressure on gas 731mm. 



Temperature of dead space... 18 0< 1 C. 



Pressure coefficient 0-0036748 



Constant 66'524 



Vapour Pressures of Liquid Oxygen. 

 January 2, 1903. 



Pressure on gas in thermometer 218'65 mm. 218'8 mm. 219'0 mm. 



Temperature of dead space 18-9 C. 18-4 C. 18-3 C. 



Temperature of stem 92'5 92'5 92 0> 5 



Vapour pressure of oxygen 260'0 mm. 262-5 mm. 265*0 mm. 



Temperature on oxygen scale ... 79-90 78'96 80'4 

 Deviation from helium scale 1 0> 18 1'18 1-18 



