\ 
144 Miscellaneous Intelligence. 
5. On the Koh-i-noor Diamond; by Prof. Tennant, (Atheneum, 
No. 1300.)—At the last meeting of the British Association, Dr. Beke 
read a paper ‘On the Diamond Slab supposed to have been cut from 
the Koh-i-noor.’ He stated :—“ At the capture of Coochan there was 
found among the jewels of the harem of Reeza Kooli Khan, the chief 
of that place, a large diamond slab, supposed to have been cut from 
one side of the Koh-i-noor, the great Indian diamond now in the pos- 
session of Her Majesty. It weighed about 130 carats, showed the 
marks of cutting on the flat and largest side, and appeared to corres 
rof. Tenn 
P 
pond in size with the Koh-i-noor. nnant was induced . 
he Koh-i-noor. By this means he was enabled to include the piece 
described by Dr. Beke, and probably the large Russian diamond, as 
forming altogether but portions of one large diamond. The diamond 
belongs to the tesseral crystalline system: it yields readily to cleavage 
in four directions, parallel to the planes of the regular octahedron 
Two of the largest planes of the Koh-i-noor, when exhibited in the 
Crystal Palace, were cleavage planes,—one of them had not been pol 
ished. This proved the specimen to be not a third of the weight of the 
original crystal, which he believed to have been a rhombic dodecahe- 
dron; and if slightly elongated, which is a common form of the dia- 
mond, would agree with Tavernier’s description of it as bearing some 
resemblance to an egg. Sir D. Brewster made some observations, and 
stated that the English translation of Tavernier’s work left out the 
minute details which were fully given in the original. ‘Sir David ex- 
pressed his satisfaction with Mr. Tennant’s illustration,—which clearly 
proved the diamond to be only a small part of a very large a 
stone. 
6. On Glynn and Appel’s Patent Paper for the prevention of Piracy 
and Forgery by the Anastatic Process; by S. Bareson, Esq., (Athe- 
neum, No. 1300.)—As some may be unacquainted with the nature 
of the Anastatic process itself, and of the abuses of which it is capable 
in unscrupulous hands, I think it right, in the first place, to give you & 
short account of its history, nature, and progress. was invented 
some eight or nine years ago by Mr. Rudolph Appel, a native of Silesi 
who came over to this country. Owing to various circumstances, the 
Anastatic printing languished for several years, until tardy justice wes 
done to its inventor at the Great Exhibition in 1851, when a prize medal 
was awarded him. Since that time it has been becoming more gen® 
intricate the design. a 
I will now endeavor to describe the actual operation of Avastali¢ 
printing. The print of which an Anastatic copy is required Is first 
moistened with very dilute nitric acid (one part of acid to seve? © 
water), and then being placed between ‘bibulous paper, all superaband- 
