Tuer STEAM 
Plate I. 
II. 
III. 
TV. 
V. 
Vie 
Vi£ 
VILE 
Bist OM PATHS: 
TURBINE (Parsons): 
Section through compound steam turbine.........------------- 
Steel file, showing destructive action of steam......------------ 
Three-phase turbo-alternator 
Shaft of large marine turbine 
Diagram: Increase in size of marine turbines 
Diagram: Earning power of a turbine and three other steamers. - 
Diagram: Steps in marine turbine development ---.---.---.---- 
Turbo-blowing engine. Section 
MEcHANICAL ComposITION IN Printine (Turpain): 
Plate I. 
ie 
Ill. 
Machines for composing’ aicast line. -. 522.5225 -2-2--55--5-2: 
ihe rototypeand the monotype: . 2. .-+ sss2252s5s0> 5025-555. 
The electrotypograph, 1907 model 
Evecrric TRUNK-LINE OPERATION (Sprague): 
Plate I. 
Il. 
Ill. 
IV. 
We 
Vike 
VII. 
Early Sprague, Duncan, and Hutchinson locomotive. New York 
Central direct-current locomotive 
Ganz polyphase locomotive. New Haven alternating-current 
NOEOMIGULVE =o ee ee ae tea en enes Oe cL esd Bowen 
New Haven double overhead catenary trolley........---------- 
Oerlikon trolley. New York Central third-rail system 
Protected third rail in sleet. Same in snow 
Armature of bipolar direct-current motor. Motor and axle unit 
of alternating-current locomotive 
New York Central multiple-unit train 
see w ewe ee wee eee ee ee ee eee ee ee 
ProGress IN Evectro-Merauuurey (Kershaw): 
Plate I. 
IDE 
10 E; 
Le 
Ne 
VI. 
VII. 
VILE: 
TX: 
Df 
Power plant, La Praz Works, Société Metallurgique Francaise. - - 
Vat room, American Metals Refining Company. A carborun- 
dum furnace 
Furnace room, the Carborundum Company 
Furnace room, International Acheson Graphite Company. ------ 
Kjellin electric furnace 
Near view of Kjellin furnace. 
Pouring a Stassano revolving furnace 
Tank house and melting room, Consolidated Mining and Smelt- 
ing Company. Electrolytic lead refinery, same company 
Double electric furnace, Keller, Leleux et Cie---.---.---------- 
Héroult electric tipping furnace 
Progress IN Coton PHotroGRapHy (Smillie): 
Plate I. Specimen of a peacock, from a photochrome 
INEXPENSIVE ASTRONOMICAL APPARATUS (Hale): 
Plate I. Star cluster Messier 11 and part of Milky Way 
III. Coelostat and mirror of Snow telescope 
IV. Concave mirror of Snow telescope 
VY. Simple wooden spectrograph and part of modern spectrograph on 
Mois WalsOnee sense eee sae eas oe ee at aa ee a amet a = 
graph 
THE Satron Sra (Newell): 
Plate devia of Imperial Walley.252 52-2555 .ce~ cesses se aoes-ndens's 
II. Headworks of irrigating sytem of Imperial Valley 
III. Agricultural land destroyed by flood water......--------------- 
