Mr Barloiv, On the Osmotic Pressure of Aqueous Solutions. 231 



then used with -002 N sugar solution. The cell was soaking in this 

 for three days; it was emptied and refilled on Thursday, Mar. 17. 



Time 



Gauge levels 



Tempera- 

 ture 

 (degrees C.) 





narrow- 

 limb 



wide-limb 



Thursday, 11.30 



Monday 



The cell was emp- 

 tied and refilled: 

 pressure added. 



Tuesday, Mar. 22 



Tuesday, April 1 9 



r open 

 1 263 

 ] closed 

 I 277 

 275 



291-6 



288-5 



261 



260 

 260 



259 

 259 



10 

 11-5 



^Calculated osm. 



pr. on Apr. 19 



= 29-5-2 



1 = 27*5 mm. 



This is below the 



\ theoretical value 



The cell had been standing through the vacation, and the 

 pressure after 28 days seemed at a steady value. During the 

 interval a higher value may have been reached. The readings on 

 April 19 give a value below that required by theory. 



After the above experiment cell XIII was washing for two 

 days, and was then filled with fresh -002 N sugar solution. After 

 one day, the cell was emptied and refilled with the solution for the 

 experiment, Saturday, April 23, 1904. 



(2) Cell XIII. "002 N cane-sugar solution. Theoretical 

 osmotic pressure = 34 mm. at 0° C, Saturday, April 23. 



Time 



Gauge levels 



Temperature 



narrow- 

 limb 



wide-limb 



Saturday, Apr. 23) 

 Pressure raised j 

 Monday 



Wednesday 

 Friday, Apr. 29... 

 Friday, May 5 ... 



255-4 

 247-2 



247 



247-2 



247 



219-4 

 220 



220 

 220 

 220 



Average temperature of the 

 laboratory was 13° C. 



