130 
GENERAL INDEX. 
Electrical contact maker, a new, Prof. H. 
S. H. Shaw on, 1882, 465 
- contacts, reinforcing, so as to in¬ 
crease their reliability, E. W. Serrell, 
jun., on, 1887, 881 
-discharge in vacuo, J. P. Gassiot on 
the deposit of metals from the negative 
terminal of an induction coil during 
the, 1861, 38 
-distribution, demands of a system 
of, F. J, Sprague on the, 1882, 448 
- distribution, a system of, H. Ed¬ 
munds on, 1888, 813 
* - gyrostat, Prof. G. Forbes on an, 
1879, 290 
* -measuring instruments, compensa¬ 
tion of, for temperature errors, J. 
Swinburne on, 1887, 621 
--pressures, effect of direct and alter¬ 
nating on the human body, J. Swin¬ 
burne on the, 1890, 758 
t-oscillations in air, J. Trowbridge 
on, 1890, 754 
- phenomena which accompany the 
contractions of the leaf of Dioncea 
muscipula, Dr. J. Burdon Sanderson on 
the, 1873, 133 ; *1876, 163 
-properties of bees’ wax and lead 
chloride, Profs. J. Perry and W. E. 
Ayrton on the, 1878, 497 
* -resistance, R. T. Glazebrook on the 
permanence of the B.A. standards of, 
1887, 608 
- resistance of commercial iron, W. 
H. Preece on the specific, 1887, 609 
* -- resistance, final value of the 
B.A. unit of, as determined by the 
American Committee, Prof. H. A. 
Rowland on the, 1887, 609 
-- measurements, standards for use in, 
report of the Committee for construct¬ 
ing and issuing practical, 1881, 423 ; 
1882, 70 ; 1883, 41 ; 1884, 29 ; 1885, 
31 ; 1886, 145 ; 1887, 206 ; 1888, 55 ; 
1889, 41 ; 1890, 95 
Appendix to first report, 1881:— 
I. Account of preliminary experiments 
on the determination of electrical 
resistances in absolute measiire, by 
Prof. G. Carey Foster , 426 
II. On the causes of the variation in 
the temperature coefficient of the 
alloys of platinum and silver, by 
Herbert Taylor, 431 
Appendix to the fourth report, 1884 :— 
I. On the values of the B.A. standards 
of resistance greater than 1 B.A. 
unit, by R. T. Glazebrook and H. M. 
Elder, 30 
II. Table giving the values of the coils 
tested for the Committee in 1883-4, 
by R. T. Glazcbrooh, 32 
Appendix to the sixth report, 1886 :— 
On the values of some standard resist¬ 
ance coils, by R. T. Glazebrooh and 
T. C. Fitzpatrick, 147 
Appendix to the eighth report, 1888 :— 
On the permanence of the original 
standards of resistance of the British 
Association and of other standard 
coils, by R. T. Glazebrook and T. C. 
Fitzpatrick, 56 
Appendix to the tenth report , 1890 :— 
I. On the values of certain standard 
resistance coils, by R. T. Glazebrook, 
98 
II. On the air condensers of the British 
Association, by R. T. Glazebrook (with 
a note by Dr. A. Muirhead ), 102 
III. On the specific resistance of copper, 
by T. C. Fitzpatrick, 120 
IV. A comparison of a platinum ther¬ 
mometer with some mercury thermo¬ 
meters at low temperatures, by E. H. 
Griffiths, 130 
V. On the absolute resistance of mer¬ 
cury, by R. T. Glazbrook, 136 
Electrical quantity and resistance, Lati¬ 
mer Clarke and Sir C. Bright on the 
formation of standards of, 1861, 37 
- resistance, report on standards of, 
1862, 125 ; 1863, 111 ; 1864, 345 ; 1865, 
308 ; 1867, 474 ; 1869, 434 ; 1870, 14 
Appendix to the first report, 1862 :— 
A. On the variation of the electrical 
resistance of alloys due to change of 
temperature, by A. Matthiessen, 136 
B. On the electrical permanency of 
metals and alloys, by A. Matthiessen, 
139 
C. On the reproduction of standards 
by chemical means, by Prof. A. W. 
Williamson and Dr. A. Matthiessen, 
141 
D. Professor G. Kirchhoff's letter, 150 
E. Dr. Werner Siemens's letter, 152 
F. Dr. Esselbach's letter, 155 
G. Circular addressed to foreign men 
of science, 156 
H. Description of the apparatus ar¬ 
ranged by Mr. Fleeming Jenkin for 
the production of exact copies of the 
standard of resistance, 159 
Appendix to the second report, 
1863 :— 
A. On the electrical permanency of 
metals and alloys, by Dr. A. Mat¬ 
thiessen, 124 
B. On the variation of the electric re¬ 
sistance of alloys due to change of 
temperature, by Dr. A. Matthiessen, 
127 
C. On the elementary relations between 
electrical measurements, by Prof. J. 
