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Scientific Intelligence. 
invention, and fully confides in bis own ability to demonstrate it to tbe satisfaction 
of every unprejudiced person. All he asks is a clear stage and no favour. For the pre- 
sent, then, we may consider the subject “ sub judice*.” 
2. Notice of the Newly discovered Coal Mine. 
The meritorious officer whose proceedings we noticed in our last number, has, 
since the date of the letter therein mentioned, visited and reported on the coal 
mine lately discovered in the Palamao district. There are three localities where 
coal is found ; two of them being near the spot marked Cole mine in Arrow, 
smith’s Map, and at the junctions of the Amanut Naddi with the Colga River at a 
place which is marked in that map Sidra, but its proper name is Singra. The Ama- 
nut Naddi is also laid down wrong in that map; it is made to flow into the Fulgo, 
which runs byGayah.but instead of going in that direction it flows due west by Jubra 
and Tirhussy to Sidra. The coal i9 at the point of junction, and has been laid open 
by the Amanut Naddi. The whole of the coal which is above the water line is good 
for nothing ; it contains no bitumen, or rather the bitumen has undergone such a 
change as to deteriorate the coal. Under the w ater line it is not much better, at least 
in the I wo places where trials have been made. A shaft was sunk 10 feet deep 
into the rock below the upper scam without coming at another. From the appear- 
ances, however, it is thonght another seam will he met with on piercing sufficiently 
deep. 
The route followed furnishes two interesting lines of communication and corrobor- 
ation with those of the late Dr. Vovsey. Between Sherghdti and Palamao, and be- 
tween Palamao and Moral, (15 miles S. E. of Untan, ) no rock is observable but gra- 
nite and gneiss; the same which Dr. Voysey found in his passage of the Vindiya 
range in proceeding from Rdniganj to SherghSti, and again from Sambalpur to the 
place where he died. But in all the streams which fall into Cdl river, and also in the 
bed of that river, there are seen beds of gritstone and micaceous sandstone, some- 
times accompanied with beds of state clay, which frequently include large lenticular 
masses of dark grey compact limestone, and very frequently seams of bad coal. 
These sandstone deposits are evidently superficial, lying upon primary rock. They 
greatly resemble the rock of the Mahadeo Hills, which appears to he the same as 
the millstone-grit of Connvbeare, termed by Phillips old sandstone, and distin- 
guished from primary sandstone. The coal of this formation is generally bad, aud 
in this respect the character holds ; for the coal in the Mahadeo and Palamao hills is 
equally bad, I think. 
The collection of birds had increased to 120 ; not including the most coinmoa 
species. 
3. Formation of Artificial Diamonds. 
It is known to most of our readers that some years ago a considerable interest 
was excited by some experiments, made in America, in which particles of diamonds 
were supposed to have been artificially formed during the combustion of charcoal, 
graphite, and anthracite, by the intense agency of Dr. Hare's deflagrator. Professor 
Silliman, amongst others, appeared to have received the opinion of their possible 
production in this way with some indulgence; but a closer attention to the phenome- 
na and more rigorous examination of all the circumstances of the case showed, that 
these pretended diamonds were merely fused particles of the several earths and 
alkalis, which are known to enter into the composition of common wood charcoal, 
the pure carbon having been entirely consumed. 
Another supposed method of forming diamonds artificially has latelvbeen brought 
forward in France by M. Gannal. He has submitted the details of 'his process to 
the Academic des Sciences; and he appears himself convinced that small crystals of 
diamond were produced in the experiment he records. It is as follows. 
Carburet of sulphur being prepared and covered with a layer of water, several 
rolls of phosphorus were introduced, and on coming into contact with the carburet of 
sulphur, appeared to liquefy and sink down to the bottom of the matrass, thus form- 
ing a third stratum of fluid distinct from the other two. The matrass was then 
shaken ; the liquid grew thick aud milky ; and after a little rest separated again, 
* The objections alluded ta referred to the necessi ty of making the beam oscil- 
late before the weight would descend ; having to lift a double load. The space 
too through which the weight fell, was too limited to allow a positive opinion as 
to whether the action would continue any length of time. 
