specific consumption.... .XVIII (01) 558; xx (02) 107

starting current-time characteristic....... XVIII (01) 563
volt-ampere characteristic

voltage candle-power characteristic...

.XVIII (01) 552

.XVIII (01) 560

XVIII (01) 545

.XVIII (01)

..XVIII (01) 566

.XVIII (01) 556

Lamps, osmium filament, (continued)

specific consumption.....

.XVII (01) 75;
XXV (06) 792

Pentane (see Light, standards).
tantalum filament, candle-power at different

specific consumptions..... XXIX (10) 936
candle-power depreciation.. XXIX (10) 1719
candle-power distribution...xxv (06) 824
candle-power, effect of

e. m. f. variation...

color composition..

first commercial....

.XXV (06) 822
... XXV (06) 840

initial current, oscillogram..xxv (06)

life curves

resistance

.XXIX (10) 927

824

.XXV (06) 832

.XXIX (10) 930

XXIX (10) 927

specific consumption....xxv (06) 792, 831;

specific consumption, effect

of e. m. f. variation.......xxv (06) 822
spherical reduction factor...xxv (06) 831

tungstate of calcium, demonstration....

tungsten filament, blackening.

candle-power at different spe-
cific consumptions...

.XIX (02) 67
.XXIX (10) 952

XXIX (10) 936

Land reclamation, method of changing....

Lansing, St. John & St. Louis Electric Ry. overhead con-

struction

Latour self-exciting compound alternator..

Laundry, electric equipment, Biltmore, description.
Leakage, alternator, effect of design factors..

XXVII (08) 478

..... XXIV (05) I10
...XXI (03) 569
.XXVII (08) 656
. XXII (03) 51
.XXIII (04) 307
XXII (03) 52

currents from railways (see Stray currents).
reactance induction motors (see Motors).

Leggo automatic telegraph ...

Lehigh canal, electric haulage.

University, method of teaching engineering.

Library dinner

Lecco, Londrio & Chiavenna three-phase railway, descrip-

.XXIX (10) 1310
.XXVII (08) 277

..XXVI (07) 1461
.XXI (03) 97

.XVIII (01) 102
....xxv (06) 840
XXV (06) 840
.XXV (06) 851
XXVII (08) 1319

XXVII (08) 1332

.XXI (03) 394

intensity, standard radiation energy,

criticism..... XXVII (08) 1320

XXVII (08) 1320

XXVII (08) 1330, 1338

methods of producing..

natural, average tint.

production by electro luminescence..

XIX (02) 76

.XIX (02) II

.XIX (02) 77

.XIX (02) 77

.XXV (06) 862

.XXI (03) 396
.XIX (02) 52
XIX (02) 57
.XIX (02) 57

.XIX (02) 81,

90

..XIX (02) 570

.XXVIII (09)

4

XXV (06) 644
xxv (06) 644
.xxv (06) 646

.XXIX (10) 143

95

....XX (02)
.XXIX (10) 144
XXIX (10) 170

.XIX (02) 579

xx (02) 71
.XIX (02) 24

XXIX (10) 144

high-tension, electrical properties. .....XIX (02) 219

horn-gap, advantages

XXVII (08) 450