CHEMISTRY — NOYES, RICHARDS. 193 



Noyes, Arthur A., Massachusetts Institute of Technology, Boston, Massa- 

 chusetts. Grant No. 413. Researches upon (i) Electrical conductivity 

 of aqueous solutions at high temperatures; (2) Electrical transference 

 determinations in aqueous solutions. (For previous reports see Year 

 Book No. 2, p. xxxi ; Year Book No. 3, p. 109; Year Book No. 4, p. 154, 

 and Year Book No. 5, p. 153.) $2,000. 



These researches have now been in progress under the auspices of the 

 Carnegie Institution of Washington, for a period of five years. The methods 

 employed and the results thus far attained have been fully described in Pub- 

 lication No. 63 of the Institution — a monograph of 352 pages, in twelve 

 parts, entitled "The Electrical Conductivity of Aqueous Solutions," which was 

 issued in September, 1907. At the close of that publication, in part xii, will 

 be found a comprehensive but concise summary of the work which has been 

 accomplished. It may, however, be mentioned that the work executed during 

 the past year has consisted mainly in the study of the conductivity and 

 ionization-relations of a number of important acids between 18 and 306° 

 and in the further development of the apparatus and method for extending 

 the measurements with all classes of substances to the critical temperature 

 (375°) ^^^ above. Progress has also been made in the research upon elec- 

 trical transference in aqueous solution, which has for its object the deter- 

 mination of the extent to which the ions are hydrated. Conclusive evidence 

 has already been obtained that each equivalent of sodium ion carries not less 

 than 2 mols of water. 



Richards, Theodore W., Harvard University, Cambridge, Massachusetts. 

 Investigations concerning the values of the atomic zveights and other 

 physico-chemical constants. Grant No. 414. (For previous reports see 

 Year Book No. 2, p. xxxii; Year Book No. 3, p. 112; Year Book No. 

 4, p. 155, and Year Book No. 5, p. 154.) $2,500, 



All the available time, instead of being devoted to experimental work, 

 was spent in codifying and publishing nine papers issued as parts of publica- 

 tions Nos. 69 and y6 of the Institution or whose titles are given in the bibli- 

 ography in this volume (pp. 46-54). These papers give in full the results of 

 the investigations numbered i, 2, 3, 4, 6, and 8 in the last report. Further 

 work upon the investigations numbered 5 and 7 and others will be prosecuted 

 with the help of able assistants during the coming winter. 



