160 



Temperature 

 of the Gulf 

 Stream 



Craniometer- 



A fos?il pow- 

 der analogoub' 

 to resiB£« 



SCIfiNTlVlC NEWf* 



the professor*s description, that the greater portion of this 

 part of Scotland is com[)osed of giay-wacke, gray-wacke 

 slate, and transition-slate, with subordinate htd» of transi' 

 tion-porphyry, transition greenstone, and flinty slate. But 

 three tracts, the first of which contains the mountain of 

 Criffle, the second Cairnsmuii of Dee, &c., and the third 

 Loch Doune, are composed of granite, sienite, sienitic 

 porphyry, and killas. The sienite and granite in some 

 places are covered by the killas ; in other places the granite 

 and sienite rest upon the killas ; and professor Jameson also 

 observed the killas alternating with beds of granite and 

 sienite, and veins shooting from the granite into the adja- 

 cent killas. The granitous rocks, beside felspar, quartz, 

 tnica, and hornblende, also contain imbedded rutilite, 

 titanitic iron-ore, and molybdena ; and, in rolled masses of 

 a reddish-coloured sienite, crystals and grains of zircon 

 were observed. Prof. Jameson also stated several of the 

 charactercs of the killas, described the magnetic pyrites it 

 contains, noticed its affinity with certain rocks of the transi- 

 tion class, and exhibited specimens to illjastcate this 

 a0inity. 



At the same meeting there was read a series of thermo- 

 metrical observations on the temperature of the Gulf 

 Stream, by Dr. Manson, of New Galloway: and adescrip- 

 tion of a new craRiometer, proposed by Mr. W. E. Leach, 

 illustrated by a sketch. 



A potter, at Dijon, has found between some strata of 

 fossil wood in the territory of Loiihans a fossil vegetable 

 powder. It is of a cinnamon colour, burns with flame, and 

 emits a peculiar smell approaching to that ofolibanum. 

 Like amber and mineral caoutchouc it appears analogous to 

 resins. 



M»igical 

 lectures. 



Dr. Crotch will commence his Course of Lectures on 

 Music at the Surry iNSxrruTioN, on Tuesday the 4th of 

 February ; and will continue them on each succeeding 

 Tuesday evenit:^, until completed. 



