LII. E. K. SCOTT. 
for access by roads, rope ways etc. Measurement of water 
power, evaporation and seepage; position and design of 
forebays, sand boxes, dams, flume and tail race. Provision 
of cranes, hauling engines, wire rope ways; design of pipe 
line, valves, turbine or impulse wheel and governing gear, 
etc. Layout of power house, substations, and houses for 
men engaged on construction etc.; questions re suitable 
building material and methods of getting same on to site. 
Providing for light and power during construction; deciding 
as to system, voltage periodicity ; size and detailed design 
of main generators, exciters, transformers, and switch gear. 
Calculation of transmission lines, type and number of poles, 
sizes of insulators and pins; prevision against lightning, 
and for safety where transmission lines cross roads, rail- 
ways, etc.; design and equipment of substations. 
There is also miscellaneous work such as arranging for 
agreements about water and fishing rights and rights of 
way for transmission lines. Negotiations with the authori- 
ties re crossing roads and railways and non interference 
with telegraphs and telephones. The engineer may also 
have to arrange for the commissariat during construction, 
to conduct preliminary negotiations for sale of power 
etc., etc. 
The slides shown are those of the Snowdon transmission 
of the North Wales Power and Traction Co., for which the 
writer acted as advisory electrical engineer before coming 
to Australia in 1905. As will be seen from Table I and the 
Schedule, it is a 8,000 HP plant, working on a fall of 1,140 
feet, and it may be taken as typical of what is required at 
Barron Falls if ever that installation be carried out. 
