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Art. XXXVIII.— scientific INTELLIGENCE. 
I. NATURAL I^HILOSOPHY. 
ASTRONOMY. 
1 . Volcanoes in the Moon. — On the evenirig of Sunday the’ 
4th of February, when the moon was two days old, Captain 
Kater, and Mr James Dunlop of Beith in Ayrshire, (well knowit 
for his skill in making reflecting telescopes, and other scientific 
instruments, and who accompanies Sir Thomas Brisbane to New 
South Wales,) discovered a volcano in the moon, not far from the 
boundary of illumination. Captain Kater describes the volcano’ 
as resembling a small nebula of variable brightness, and subtending 
an angle of 3^' or 4". The distance from the edge of the moon 
was ^ th of her diameter ; and on the 6th February, the angle 
which it formed with a line joining the cusps, was about 50°.. 
Mr Dunlop observed it both with a Cassegrainian and Gregor 
rian reflector, and with both it had the appearance of a small 
luminous spot. Mr Dunlop was not aware till he passed through 
Edinburgh on the 27th of February, that Captain Kater had 
made a similar discovery, and had announced it to the Boyal So- 
ciety of London on 15th February. Mr Dunlop observed the 
very same phenomenon in the year 1817. 
2. OccuUaiion of ^ Pisces on the (6th February 1821. — The 
subjoined observations on the occultation of ^ Pisces by the 
moon, were made by Colonel Beaufoy, under very favourable 
circumstances. He paid particular attention to discover if any 
diminution of the staPs light took place on its approach towards 
the moon’s limb ; but no such phenomenon was perceptible, and 
the immersion was instantaneous. 
Mean time at Bushey Heath, in N. Lat. 51° 37' 44". 3, and 
West Long, in time, V 20".93. 
6th Feb. 1821, Immersion, - - 6^ 13' 28."7 
Emersion, - - 7 07 06.7 
3. Elements of the Comet which is expected in 1822. — This* 
interesting comet, of which we have given a full account in 
Vol. I. p. 390. of this Journal, is expected to re-appear about 
