GENERAL.

The trade to several of the ports having considerably diminished, I have

as vacancies occurred, been able to recommend reductions in the staff by

13 officers and men, which will effect an annual saving of L1,932,

without in any way impairing the efficiency of the Department.

Having visited all the lighthouses on the Queensland coast, I find the

sites upon which the structures are erected have been selected with

great care and judgment, and the illuminating apparatus of the most

modern description (excepting Cape Moreton, which, however, shows an

excellent light), and supplied principally by the eminent lighthouse

engineers, Messrs. Chance Bros., of Birmingham.

Additional 1st or 2nd order lights are not necessary at present, but in

the Inner Route and Torres Strait much time is lost by the mail and

other large steamers through having to anchor at night. Steam vessels

are fast superseding sailing vessels, and their number passing along

this coast increases every month, which will soon render additional

lights necessary.

Pintsch's gas for beacons, buoys, and light-vessels is being adopted to

a great extent in Europe, Asia, America, and the Suez Canal. In the

colony of Victoria Pintsch's gas buoys are also in use. It possesses

great advantages, owing to the cheapness of first cost and to the fact

that no outlay is necessary for lightkeepers, as the light burns from

six weeks to two months without attention. This system of lighting is

admirably adapted for use in the Inner Route and for the shifting

channels at the entrance to Moreton Bay. Several lightships with their

crews have been recently dispensed with in France, and gas buoys

substituted.

Another cheap and very effective light, the "Trotter Lindberg," is being

introduced into the lighting system of Europe. This light is produced by

burning paraffin or lythene oil in a specially designed apparatus. With

the latter the light burns 14 days, and with the former 7 days without

attention. A special feature of the apparatus is that an intermittent

light is produced by the automatic action of a screen, which is made to

revolve by the ascent of the heated air produced by the light. To mark

the outer end of a cutting or narrow channel, the Trotter-Lindberg light

might be utilised instead of a lightship. A lantern, with optical

apparatus complete, costs about L100 to L125 in London.

Report on the Department of Ports and Harbours for the Year 1890-91 · 第 39 / 49 题