507
transit room. The
for the Lidereal clock to be erected also in the amplext ventilation will be Afforded to this room with a view to Equalizing the temperature within it as much as possible.
The two isolated wooden huts with felted nors for the magnetic instruments, ie: the dip "circle and unifilar magnetometer, will be
erected on
the wester Eminence
of
the hill.
and about 300 feet distant from the main building . They should be placed at once in position that when the time arrives
sunken chamber for
such a
for building
a
the
tive
self recording magnetometers they may left undisturbedly in their original sites. The two huts will possets
Special features Requiring description; they may
с
no
be facsimiles
of the small and inexpensive Structures used for the same,
the same purpose
purpose at New Observatory.
"The same precautions will of course be observed against draughts from faulty, windows, and
gainst the Employment of
only
iron in any of the
The fittings. roof for Equalizing temperature .
addition will be a double
temperature . The upper
roof
will act as an umbrella to the lower
OKL
And this shade with the current of air passing in between them will have
a
sensible.
Effect
The
The
upper 2007s
will
in reducing the Effect of temperature
の
nomento
the magnets.
be so constructed as to be Easily swept off by the typhoon without injury to the lower roop or the huts themselves. To allempt to fasten them down and render them typhoon proof
would be to jeopardize the Entire structures.
The cost of the whole of these Observatory buildings complete will be $11000
Equipment . The following
are the instruments
and apparatus proposed, together with their prices.
і
(Astronomical Branch.)
three inch transit instrument by
Simms, with accessories complete
1 Sidereal clock by E Dental?
towork a sympathetic dial
5
And bearings to pest on Stone piers) #130.0.0
84.0.0
Seconds contact fitted to the foregoing
1500.0
12.0.0
200
$0.00
12.0.0
Sympathetic dial
Battery and wire for the foregoing
I Mean kine clock.
An hourly contact apparatus to Jame
a three-current relay
Magnetic Apparaties for selling the mean
time Clock to hime
2 Marine Chronometers,
1 for reserve use
12 10.0
6.0.0
60..0.0
20.0.0
Timeball apparatus complete, by Varley 400.0.0
Packing and shipping
Erection of Same
Packing and Shipping
50.00
2000
Total astronomical Equipment £ 873.0.0
(Meteorological Branch)
a Barograph verified at Kew including fee 80.15.0
a
thermograph do
A Sun Shine re corder do
do
do
do
do
Carried over
117.10.0
12.13.0.
f 210418.0
محمد
7