386 Dr Graham^s Description of Netv or Rare Plants. 



attenuated at both extremities, shining and lurid above, white and veined 

 below, wrinkled, glabrous on both sides, ciliated, ciliae short. Panicle termi- 

 nal, erect. Calyx\ like the pedicels, peduncles, rachis, petiole, middle rib of 

 the leaf, and the branches, pretty closely covered with short glandular 

 pubescence, 4-toothed, teeth blunt, and much shorter than the tube. 

 Corolla (half an inch long) clavato-funnelshaped, deep lilac, glabrous, 

 wrinkled; tube sliglitly compressed ; limb erect, 4-parted, segments in- 

 volute in their edges. Stamens adhering to about the middle of the tube ; 

 anthers incumbent, oblong, yellow. PisHl much shorter than the tube ; 

 stigmata large, cohering ; style filiform, glabrous ; germen green, gla- 

 brous, bilocular ; ovules four. 

 This plant was received at the Botanic Garden from Mr Booth of Ham- 

 burgh in the end of October 1832, and flowered in the open border in the 

 end of May and beginning of June. It seems therefore to flower later, 

 and to remain longer in blossom than any of the species previously in 

 cultivation, but does not equal any of them in beauty. As the name 

 under which we received it was not legible, and as I had not seen it 

 any where described, I proposed that it should receive the name of 

 S. Jacquinii, from the botanist who first noticed it ; but I have since re- 

 ceived the above quotation from Dr Hooker. 



CHEMICAL ANALYSES OF STRATIFIED ROCKS ALTERED BY PLU- 

 TONEAN agency; AND ANALYSIS OF LARGO LAW BASALTIC 

 ROCK AND WOLLASTONITE FROM CORSTORPHINE HILL. 



I. 



The interesting displays of changed strati/led rocJcs observed 

 at the line of junction of stratified and unstratified formations, 

 pointed out long ago by Hutton, abound all around Edinburgh. 

 An examination of these changed neptunian masses, shews 

 that, in some instances, they have been simply hardened, in 

 others softened, to such a degree as to allow a movement of the 

 particles, and consequently a new arrangement of these on cool- 

 ing, thus giving to the altered rock a series of external charac- 

 ters different from that possessed by the unchanged rock. As 

 the external characters of minerals are intimately connected with 

 their chemical composition, it seemed probable that these sof- 

 tened rocks had, in all probability, acquired a new chemical 

 composition ; a conjecture illustrated by the following analyses. 



Lochend. — At Lochend, near to Edinburgh, there is a fine 

 display of the changes produced on some of the rocks of the coal 

 formation by the greenstone of this district. The greenstone 

 crag which rises immediately from the side of the Loch, rests 

 upon, and is partially covered by slate-clay and sandstone of the 



