42 REPORTS ON THE STATE OF SCIENCE. 
1. For the International Ohm. 
The use of copies, constructed of suitable material and of suit- 
able form verified from time to time, of the international 
ohm, its multiples and submultiples. 
2. For the International Ampere. 
(a) The measurement of current by the aid of a current balance 
standardised by comparison with a silver voltameter ; or 
(b) The use of a Weston normal cell whose electromotive force 
has been determined in terms of the international ohm and 
international ampere, and of a resistance of known value in 
international ohms. 
3. For the International Volt. 
(a) A comparison with the difference of electrical potential 
between the ends of a coil of resistance of known value in 
international ohms, when carrying a current of known value 
in international amperes; or 
(b) The use of a Weston normal cell whose electromotive force 
has been determined in terms of the international ohm and 
the international ampere. 
The duties of specifying more particularly the conditions under 
which these methods are to be applied has been assigned to the Perma- 
nent Commission, and, pending its appointment, to the Scientific Com- 
mittee to be nominated by the President (see Schedule D), who will 
issue a series of Notes as Appendix to this Report. 
The Conference has considered the methods that should be recom- 
mended to the Governments for securing uniform administration in 
relation to electrical units and standards, and expresses the opinion that 
the best method of securing uniformity for the future would be by the 
establishment of an international electrical laboratory with the duties 
of keeping and maintaining international electrical standards. This 
laboratory to be equipped entirely independently of any national labora- 
tory. 
The Conference further recommends that action be taken in accord- 
ance with the scheme set out in Schedule D. 
Signed at London on October 21, 1908, 
by the Delegates of the Countries above written. 
For the United States of America.—S. W. Stratton, Henry S. Car- 
hart, and Edward B. Rosa. 
For Austria.—Victor Von Lang and Ludwig Kusminsky. 
For Belgium.—P. Clément. 
For Brazil.—Leopold J. Weiss. 
For Chile.—Victor Eastman. - 
For Colombia.—Jorge Roa. 
For Denmark and Sweden.—Svante Arrhenius. 
For Ecuador.—C. Nevares. 
For France.—G. Lippmann, J. René Benoit, and T. De Nerville. 
For Germany.—E. Warburg, W. Jaeger, and $t. Lindeck. 
For Great Britain.—Rayleigh, J. Gavey, R. T. Glazebrook, W. A. J. 
O'Meara, A. P. Trotter, and J. J. Thomson. 
