Viscosity of Solutions. 



281 



In Table I. will be found typical sets of observations 

 and results calculated in the case of water at certain tem- 

 peratures. 



The mean pressure only has been given, but the difference 

 between the first and second readings is always slight. 



The value of the kinetic-energy correction is also shown in 

 this table, and in the case of water at 90° it has its greatest 

 relative value. 





Fig 



\ 2- 



-Vis 



cosity-Teinperature C 



urves. NaCl Solutions. 



90 





1 



A 

























SO 





\ 



\\ 

























70 







\\ ^ 



U 























60 









X 































\ 



V 





















50 



*~i 







\Y\ 



\ 





















30 









\ 



V 



\ 



H- - 



























hN 



x 



\j 



























'XX 



^k 

















o 

















^5 



^fe 







H^. 







c 

 <: 



c 

 c 

 c 



I i 



I s 



5 9 



o 

 o 

 to 



§ 



© 



o 

 oo 

 o 

 o 





c 

 c 

 c\ 



c 



c 

 c 



c 



5 C 



I i 



> c 



c 

 a 



5 C 



c 



c 

 c 



5 C 



■> c 

 « «1 



5 O 

 5 © 

 D 00 



> © 



In Table II. the temperature is the mean, and the four 

 values (1), (2j, (3), (4) are the reduced values obtained as 

 above. 



In Table III. we have the interpolated results for water 

 compared with those determined by other experimenters, 

 whose values are those given by Thorpe and Rodger. 



In Table IV. we have produced the final mean values only, 

 except in the case of the 20-per-cent. solution, where in 

 addition we have shown the first and second mean values. 



The NaCl solutions were made from a sample of Schuchardt's 

 " very pure " kindly supplied by Mr. W. P.Wilkinson, analyst, 

 Melbourne. 



The densities of these solutions are here given a t 15° C: — 



20 p. c. 

 Observed 1-1494 



Bender's values (Wied.^4m?.xxii.) 1-1497 



10 p. c. 



5 p. c. 



1 p. c. 



1-0724 



1-0355 



1-0066 



1-0724 



10355 







