IVermrian Natural Histonj Society. 131 



■ciely, that he had observed in the same rock in Galloway, 

 both the brown and the yellow subspecies of thai verv rare 

 ore, known to mineralogists by the name ot" Rutiliie or 

 Sphene. 



At ihe meclins:!; on the 30ih of November la^t, Professor 

 Janjcson read a^ paper on Granile, He described three 

 principal formations of granite, and two of sienite. Two 

 of the granite formations belong to the prin)itive class; the 

 third to the transition : and of the sienites, one is primi- 

 tive, and the other transition. He mentioned particularly 

 the appearances thai present themselves, at the junctions and 

 alternations of the granite and sieniie with gneiss and kiilas 

 (which last is probably a viewer gneiss), and the relations 

 of these rocks to mica-slate, clay-slate, gray wacke, and 

 o-ray-wacke slate. Tlie descriptions were illustrated by 

 numerous sections and specimens from Galloway, islanU 

 ofArran, and other parts of Scotland. The Professor af- 

 terwards gave tlie natural history of a new genus of con- 

 camcrated fossil shell. In describing this shell, he em- 

 plovcd the usual zoological language; but in detailing th^ 

 other particulars, the method I'ollowed was that used in 

 •iiving the natural history of minerals. 



At°the same meeting the Secretary rea4 a communication 

 from the Kev. Mr. FleTnitig of Flisk, containing an account 

 of a bed of fossil shells which occurs on the banks of the 

 Frith of Forth near Borrowstounness. The bed is three 

 feel thick, nearly three miles in extent, and is situated about 

 thirty-three feet above the present level of spring tides. 

 ThekiiKisof shells which compose this extensive bed are 

 still fcuujd in a recent slate in the Frith. 



At the same meeting, also, Jvir. Leach gave a description 

 of a new British species of Echi/ius, whicli he had observed 

 in plentv at Bantry Bay in Ireland, and which he proposed 

 to call E. ruhupliagiiS, from the eircumslance of its forming 

 a small hollow lor itself in iLe subst;-:nce of ihe submarine 



rocks. 



At thcraeelinffoa the Mth of December, Professor Jame- 

 son read a sln)iT general aceonni of the geognosy of th.c 

 stuvvartrv of Knkcuclbiiglu. J I would appear irom the Pro- 

 fessor's description, that the greater portion of this part of 

 Scotland is composed of gray-wacke, gray-wacke slate, and 

 transition slaie, with sub'rdinate beds of iramUiun por- 

 phi/ry, trjiisition eietnslone, and flinty-slate. But three 

 tracts, the first of wiiich coruains the mountain of Criffle; 

 the second, Cairnsmuir of Dee, &cc. ; and the third, Loch 

 D<r.ine, are composed of granite, tipuitt^ sienllic porphyry, 

 K 'i iii'd 



