Mr. J. Cockle on Transcendental Roots. 



369 



ence was only 2°*5, the liquid stood at the height of 7'6 inches ; 

 in this manner the liquid fell and rose according as the air con- 

 tained more or less moisture. 



The results of the two foregoing observations will be more 

 fully considered when I describe the construction of a new 

 hygrometric instrument. 



The following experiment was made to determine the rate of 

 diffusion under an increase of temperature. 



Experiment III. 



The absorbent was the same as that used in Experiment II. 

 The temperature of the water-bath, LM, was maintained at 110°. 



The results of this experiment, on being compared with those 

 of Experiment II., show that the rate of diffusion is considerably 

 increased by an increase of temperature. 



Hastings, October 18, 1860. 



[To be continued.] 



L. Note on Transcendental Roots. 

 By James Cockle, M.A., F.R.A.S., F.C.P.S. #c* 



FILLING up that part of my "Sketch," &c. in the last August 

 Number which relates to a cubic, and making 



from 



b= Vl-a?, 



. doc 6b 



* Communicated by the Author. 



