— 
Miscellaneous Intelligence, 289 
land; if, therefore, the discoverer had assigned to it its true position, I 
did not know it 
tion—much nearer the truth than that of many other islands I have vis- 
ited during my cruise. 
4. On Shell Cameos, (Society of Arts, April 21, 1847, Jameson’s 
Jour., July 1847, Athenzeum, No. 1018, p. 470.)—Dr. Roget, V.P., in 
the chair—Mr. Gray ‘On the Manufacture of Shell Cameos.” The 
author commenced by stating that the ancients formed cameos by en- 
graving figures in low relief on different kinds of siliceous stones ; and 
generally selected for that purpose those which had layers of different 
colors, so that the figures were of divers colors. Such cumeos are 
ow made in Southern Europe and in France, where this art has 
lately been attempted to be revived: but the hardness of the mate- 
nals requires so much labor that they are too expensive to come into 
general use. Numerous attempts have been rade to substitute vari- 
kinds now employed, and which experience has taught him are best 
for his purpose, are the Bull’s Mouth, the Black Helmet, the Horn- 
Sent from England; the value of each shell in Rome being thirty 
shillings, To shew the increase of this trade, the number of shells 
used in France last year was nearly as follows : 
Bull’s Mouth 80,000, average price Is. 8d., value £6400 
000 “6 Get. 1800 
Horned Helmet 500 “ He; Od.,° > 60 
Queen Conch, ' 12,000, “ 1s. 23d., “ 700 
100,500 shells. sterling, £8960 
The average value of the large cameos made in Paris is about six 
francs each, pas a sterling value of £32,000; and the value of the 
