[SATTERLY] PARTIAL CONDENSATIOx^J 119 



Removed L, to see if plenty of condensate left. There was. 

 Allowed pressure to rise to 18 cm. 



Replaced L. Pressure fell to 9-6 but no further. Evidently 

 plenty of gas had come out of the liquid. 



Removed L. Allowed pressure to rise to 28 cm. 



Replaced L. Pressure fell to 10 cm. Pumped off the gas until 

 pressure back to 3 cm. 



Removed L. Pressure increased to 16-7 cm., then kicked back 

 1 cm. and remained steady for some time before making further in- 

 crease. 



Replaced L. Pressure back to 5 cm. 



Removed L. Pressure rose to 24}4 cm., then there was a kick 

 back to 183/^ cm. These operations were repeated over and over 

 again, but at this time I had never observed the pressure suddenly 

 rise after the application of the liquid air to the condenser. 



Readings With Viking Gas. June 19, 1916. See curve in Fig. 1 

 for record of increase of pressure as the gas was passed in. The con- 

 densate was a white solid. Here, on removal of L, the kick occured, 

 at a pressure of 10 cm., and I observed when the liquid air was applied 

 that the down kick on the gauge occurred at the same place. This 

 was the first record of the "down" kick (i.e. the kick caused by in- 

 crease of pressure). In the case of this gas seven halts were observed 

 as the pressure gradually rose to atmospheric pressure. 



Readings With Bow Island Gas. June 19, 1916. See curve B.I. 2., 

 Fig. 2. I quote here the gist of the readings: 



Pressure 35-6 cm. White solid condensate in streaks on side of 

 tube. 



Pumped off gas until pressure down to 4 • 3 cm. 



Removed L. At 21 cm. melting steadily, at 23 and 24 cms. oscil- 

 lations occurred. Clear liquid produced. 



Applied L. Pressure back to 15-2 cm. only. 



Pumped down to 3 • 1 cm. 



Removed L. Gauge fell to 15 cm., then up to 12}4\ slowly passed 

 14, 15 to 16, then kicked up to 14 cm. 



Applied L. (Pressure down to 7 • 7 cm.) Pumped down to 3 • 2 cm. 



Removed L. Steady at 11. Kicks at 11-3 and 11-5 cms. 



Applied L. Pressure down to 4-3. Pumped to 3-2 cms. 



Removed L. At 9}4 a halt, then at 22 a kick up to 14 cm., i.e. 

 a sudden dimunition of pressure of 8 cm., etc., etc. 



I observed here, the explosion of the solid in the act of freezing, 

 the pressure suddenly increasing from 7 to 11 cm. Repeated this and 

 got an increase of from 5 to 15 cm. In fact it is now sometimes easier 



