346 



BEPORT 1886. 



The gelatine solution was warmed in a water-bath to 35° C. Siinultaneou& 

 measurements wei'e made of temperature and resistance. As the water cooled the 

 former fell, while the latter slowly rose. 



The preceding table shows in the first column the observed temperatures, and in 

 the second the resistance in British Association units. From these data the conduc- 



tivity was calculatedin arbitrary units (according to the formula I — 



10000 



, m bemg 



the resistance given in the second column) ; the values of I are given in column 

 three. The fourth and fifth columns exhibit the differences of the temperatures and 

 the conductivities. 



The results with the gelatine solutions to which salt had been added are given 

 below: — • 



Gelatine Solution with Sodium Chloride. 



Gelatine Solution loith Zinc Sulphate. 



Gelatine Solution with Copper Acetate. 



