1813.] 



Scientific InteUigence, 



217 



Article IX. 

 sciENTi^'ic intelijcence:. and notices of subjects 



CONNECTED WITH SCIENCE. 



I. Fegeial'Ips found hi some species of Minerals. 



Professor Blutntnbacb, of Gottingen, in a letter to Von M0II5 

 says, that though he had hitherto disbelieved the occurrence of 

 vegetable bodies in the dendritic variety of chalcedony named 

 mocha stone^ he must now admit that it does somctimt's contain 

 true vegetables, apparently of the nature of conjevia. He 

 observed these in specimens from Iceland and Cather'nenburg. 

 The same celebrated zoologist received from Dr Lichienstein, 

 the traveller, a very remarkable agate, wiiich vva.^ worn as a 

 precious amulet by a Japanese prince. On examining it, he dis- 

 covered in its interior the fructification of an unknown plant, 

 somewhat resembling the sparganium erectum, 



11. Turquois, 



Dr. Langsdorf, who accompanied Captain Krusenstern in bis 

 voyage round the world, presented to Elumenbach an uncut 

 turquois, from Nischal)ar, in Eastern Persia. From the specimen 

 it appears certain that this substance is not a petiifaction, hut a 

 particular mineral species which occurs in nests in beds of clay. 

 According to the analysis of Dr. John it appears to be neariy 

 allied to mollite (siderite). 



in. Chromium in Chlorite, 



Mr. Bergweser Uttinger, of Sontkofen, has discovered from 

 1 to li per cent, of chromium in a green coloured mineral liere- 

 tofore considered as chlorite, and which gives a green colour to 

 some kinds of sandstone. This mineral occurs in masses, from 

 the size of an inch to that of a pea, in grey shell limestone and 

 grey sandy marl. It occurs also disseniinated in con-pact and 

 lenticular clay iron sti-ne. It thus appears that chromium is far 

 from being circumscribed in its distribution. 



IV. Itnlian Rocks. 



Mr. Giuseppe Gautieri, principal inspector of forests in the 

 kingdom of Italy, has lately examined the interesting valleys of 

 Fiemme, Fas a, and Livinalunga, and finds the rocks to belong 

 to the floetz trap formation, and to resemble in every respect the 

 trap hills near Verona, Vicenza, and Padua, which have been 

 described by many mineralogists as volcanic. 



V, Gieseke, the Mineral Dealer. 

 I'his Gentleman was mei^tioned in a paper on Greenland 



