186 Notices respecting New Books. 



however, obtained with the same arrangement, L e. electro- 

 lytic iron against platinum. 



Temp 405° 410° 425° 480° 



E.M.F 1-182 l-18o l-17o 1*135 



On comparing these numbers with those obtained from 

 sodium hydroxide, it is seen that the difference is not very 

 great. 



The above results are in close agreement with those found 

 by Haber and his co-workers Fleischmann and Foster * 

 concerning the oxy-hydrogen cell with glass and porcelain 

 as electrolyte. In especial between 340° and 575° C. the same 

 thermody nautical expressions have been confirmed with these 

 gas-cells (described bv Haber in Zeit. /'. Electrochem. 1906, 

 No. 24). 



It seems rather interesting that such distinct cases as the 

 Carbon Cell and the dissociation of water-vapour at high 

 temperatures are governed by the same thermodynamic 

 relation ; that is to say, they are both consequences of the 

 free energy of the formation of water-vapour from its 

 elements, the amount of which is found to be almost identical 

 with the results of experiments described and quoted above. 



In conclusion the author wishes to acknowledge his 

 obligations to Professor Haber for kind assistance and 

 advice. 



Karlsruhe, Ohem. Techn. Institut 

 der Hochschule, July 1906. 



X. Notices respecting Neiv Books. 



The Roi/al Society, Or, /Science in the State and in the Schools. 

 By Sir William Huggins, K.C.B., O.M., D.C.L., LL.D., Sc.D. r 

 P.R.S., &c. With twenty-five illustrations. London : Methnen 

 & Co. 1906. Pp. xvi+132. 



HPHIS sumptuously printed and beautifully illustrated volume 

 -■- deserves to be widely circulated, not so much, perhaps, on 

 account of its intrinsic artistic value, as by reason of the weighty 

 matters of national importance with which it deals. It is practi- 

 cally a plea, by its distinguished author, for the wider recognition 

 of the claims of Science by the State, the responsible public, and 

 the schools. The bulk of the subject-matter has been taken from 

 Sir William Huggins's Presidential Addresses. The introductory 

 part contains an interesting sketch of the early history of the Eoyal 



* Zeit. f. anorgan. Chem. vol. li. pp. 24o & 289 (1906). 



