144 Intelligence and Miscellaneous Articles. 



of water; and as the method described in the preceding pages also 

 depends upon the measurement of differences in the rate of rise, 

 the correction would eliminate and would, therefore, not affect the 

 values of the specific heat of aniline as given in Table VII. Again, 

 if there are any errors in the values of the electrical standards 

 upon which my determination of J depends, they also would 

 eliminate during the calculations by which the specific heat of 

 aniline was ascertained. There can, therefore, be no doubt that 

 the value assumed for J (4*198 x 10') is the correct one to be used 

 for the reduction of the observations on aniline. 



ON THE DIELECTRIC POWER OF ICE. BY M. A. PEROT. 



I published on June 29, 1894, the result of experiments made to 

 determine the dielectric constant of ice by electrical oscillations. 

 In calculating these experiments, which I had carried out as for 

 glass, I made an error due to the external capacity, which in those 

 experiments is altered, the condenser being wholly or partially 

 immersed in the dielectric. M. Blondlot having pointed out the 

 disagreement between his results and those which I had obtained, 

 1 have gone through the calculations, and made new experiments, 

 the result of which is given below : — 



^ (air). 



X x (ice). 



Vk. 



91 



130 



1-43 



91 



133 



1-46 



136 



186 



1-37 



136 



197 



1-44 



151 



215 



1-42 



149 



214 



1-44 



Mean a/K = 1'43; K=2-04. 



— Comptes Rendus, October 8, 1894. 



ON THE REFRACTION AND DISPERSION OF ELECTRICAL RAYS. 

 BY E. GARBASSO AND E. ASCHKINASS. 



The authors summarize the results of their research as follows : — 

 We have shown that the rays proceeding from a Hertz's pri- 

 mary conductor may, by means of a prism built up of resonators, 

 be resolved into a spectrum, and draw from this the following 

 conclusions: — 



(a) The rays of electrical force emitted are not necessarily to be 

 regarded physically as monochromatic, but as compound, with as 

 much justification as ordinary light. 



(b) Helmholtz's theory of colour-dispersion acquires fresh sup- 

 port from our experiments. — Wiedemann's Annalen, JNo. 11, 1894. 



