63 



Ly Helton. This place is the seaport for Christchurch and part of 

 the Canterbury Provincial District, and separated therefrom bv the 

 lip of an extinct volcanic crater which is pierced by a railway-tunnel. 

 Lyttelton has an artificial harbour in an inlet of the sea, where moles 

 have been constructed, and extensive dredging carried out by modern 

 machines, the most interesting being the dredge on the Fruhling 

 system. 



Timaru. Here is another example of a harbour being constructed 

 with great success on an open coast, where there is a large shingle- 

 drift, and which is subject to very heavy seas. 



Dunedin. The city has many interesting works, of which may 

 be mentioned the following : Sewage with sea outfall, water-supply 

 with reservoirs, asphalt streets, and the electric tramways. The 

 Otago Harbour Board's activities embrace wharves, reclamations, 

 control and deepening of the channel to Port Chalmers and at the 

 Heads. The works at the Heads dealing with the littoral sand-drift 

 have been a great success. There are two dry docks at Port Chalmers. 

 The Dunedin cable tramways, giving access to the hill suburbs (three 

 in number), are very interesting. The Maori Hill electric tramway 

 is interesting as being one of the very earliest constructed electric 

 tramways. 



Westland.The west coast of the South Island provides a field in 

 which the mining engineer will be at home. The coal-mines north 

 of Westport, also at Reefton and in the Grey Valley ; the gold-bearing 

 reefs in the Reefton region ; the alluvial-gold dredge at Rimu, and 

 a few sluicing claims, may be seen with profit. In connection with the 

 coal-mines, the railways, tramways, inclines, bridges, and other works 

 required to bring the coal to market are an education. Attention is 

 draw T n to the harbour-works at Westport and Greymouth, controlling 

 river-embouchers through shingle-drift. The Otira railway-tunnel, 

 now nearing completion, is five miles and a quarter in length. It 

 passes through the Southern Alps, on a grade of i in 33 ; it may be 

 seen during the journey from Christchurch. 



R. W. HOLMES. 



ELECTRIC-POWER STATIONS IN NEW ZEALAND. 



The question of electric-power supply in New Zealand is of especial 

 interest in view of the liberal policy adopted by the Government in 

 the development of the water-power resources of the Dominion. The 

 general policy adopted is that provision shall be made ultimately to 

 supply every farm and settlement in the Dominion to which lines can 

 be extended profitably. 



At present two large Government hydro-electric-power stations 

 are in operation. Lake Coleridge started supply in 1916, and is now 

 developed up to 16,000 h.p. The power-station is located in the 

 Rakaia Valley, sixty- three miles west of Christchurch, and is accessible 

 by motor-car, or train and motor-coach, by a good road from Christ- 

 church. The Waipori Rapids plant has been developed by the Dunedin 

 City Council to 8,000 h.p., and extensions to 12,000 h.p. are in hand. 

 It is accessible by motor-car, and is about thirty miles from Dunedin. 



