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opinion that the light should be occulting, giving one
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occultation of three seconds'duration every 20 seconds.
They also recommend that the fourth Order Lantern and
Apparatus now in use at Green Island be transferred to Cape
Collinson, and a new structure erected there for the
purpose, adjacent to the present building, the focal plane
of the light to be the same as at present, viz:- about 200
feet, and the Elder Brethren are of opinion that this
light also should be occulting, giving one occultation of
three seconds' duration every ten seconds.
In reply to your enquiry as regards the elevation of
the lights, I am to state that for practical purposes their
effect will not be impaired if exhibited at the heights
named above.
ff it is decided to adopt the suggestion as to the
lights being occulting, I am to request that this may be
stated when the requisition for the supply of the necessary
machinery is made.
The original documents accompanying your letter are
returned herewith as requested.
I am,
Sir,
Your obedient Servant
Chut Kes