150 RETORT—1896. 
Experiments for improving the Construction of Practical Standards for 
Electrical Measurements—Report of the Committee, consisting of 
Professor Carey Foster (Chairman), Lord Ketvry, Lord Ray- 
LEIGH, Professors AyrRTON, J. PERRY, and W. G. Apams, Drs. 
O. J. Lopce, Joon Hopkinson, and A. MurrHEaD, Messrs. W. H. 
PREECE and HERBERT TAYLOR, Professor J. D. EVERETT, Professor 
A. Scuuster, Dr. J. A. FLEMING, Professors A. W. RUCKER, 
G. F. FirzGeratp, G. CarystaL, and J. J. THomson, Messrs. 
R. T. GuazEesroox (Secretary) and W. N. Suaw, Rev. T. C. 
Firzpatrick, Dr. J.T. BoTromuey, Professor J. VIRIAMU JONES, 
Dr. G. JOHNSTONE STONEY, Professor S. P. THompson, Mr. G. 
Forses, Mr. J. RENNIE, and Mr. E. H. Grirrirus. 
APPENDIX PAGE 
I.— Extracts from Letters received, dealing nith the Question of the Unit of 
Heat . 154 « 
Il.— The Capacity fi for Meat of Water from 10° to 20° 0. referred to its Capacity 
at 10° C.as Unity . 162 
Ill.—Reealculation of the Total Heat of W. ater from “the Eeperiments of 
Regnault and Ronland. By W.N.SHAW . 5 . « 162 
Tue work of testing resistance coils at the Cavendish Laboratory has 
been continued, and a table of the values of the coils tested is given. 
Ohms. 
No. of Coil Resistance of Coilin Ohms} Temperature 
Paul, 38 m0) .¢, No. 447 | 100098 11°9 
Paul, 35 ab, St tc No. 448 100 (1 —-00179) 11°8 
Paul, 40 Ab Tg .¢, No. 449 | 1000 (1—-00188) 12°-5 
Hlliott,227. . 0. =. @_ No. 400 ‘99658 12°-4 
Paul, 37 ph ah: Pik ¢, No. 451 | -99961 13°4 
Nalder, 5324... GF No. 462 / -99881 12°-8 
Nalder, 5326. . . C No. 453 “99869 13°5 
Nalder, 4939 G, No. 454 ‘99899 13°-6 
PURO S254 Kip ne eee ¢, No. 455 | 1:00050 17°-7 
ape ed pe VES UO Se ¢, No. 456 | 100067 17°8 
Mow 325 as cc woul, Nev a07 | 1-00057 177-8 
Elliott, 326 ¢, No. 458 | 1:00060 1728 
The comparison between the set of standards ordered from Germany— 
referred to in the last report—is not yet completed. The work will be 
continued during the current year. 
