MISCELLANEOUS NOTICES, &C. 
xl 
therefore the thermometer would not rise to its proper 
altitude, nor fall sufficiently at night (13) The mean of the 
observations taken at this observatory will be correct but 
the maxima and the minima will be found to differ from 
those of all other observers (14). To estimate correctly 
the temperature of the atmosphere a circular (15) building 
should be constructed with a roof of at lap and a ceiling of 
planks having no wails, and from the centre the thermo¬ 
meter ought to be hung.” 
Nole by the Editor. — <J The defects (16) of the Observatory 
fur thermometrieal registers are obvious but perhaps not 
so great as our contributor considers (17). The atmosphere 
is decidedly affected by the building, which is a Magnetic 
Observatory (18). The monthly tables which we have given 
for sometime show a considerable difference in the maxima 
and minima (19). The position of the thermometer is much 
better than that in the Observatory (20) but not free from 
objections (21).” 
Remarks. 
(1) Except my bouse 
(2) Dr. Montgomerie's and Mr Ralestier’ splantations were 
both on the land s’de with mangrove jungle intervening. 
(3) Not a centre room but a room facing the north or 
land side, with three windows on the northern face, one of 
which, the centre one, was always kept open. 
(4) A current of air was always passing through the room, 
though the bulb of the thermometer was not directly exposed 
to it. 
(5) I should rather think not. 
(6) The building was not surrounded by a wooden veran¬ 
dah, but the verandah was open and was of use in modifying 
the currents, in preventing reflection from the ground, and 
likewise the son’s rays from penetrating the room during the 
time the sun had northern declination. 
(7) It is a pity the writer himself did not bear in mind the 
conditions, for then we should not have heard of centre rooms 
and wood verandahs which existed nowhere but in the writer’s 
imagination. 
(8) This is really most important if true. 
(9) This dogmatic assertion conies from a person who 
never was in the Observatory but once, and then after his 
paper had been written. 
(10) Of course if there had been a centre room and a 
wooden verandah. 
