VOL. XXIir.] PHILOSOPHICAL TRANSACTIONS. 667 



west side of this place, about 50 yards from the walls, there was discovered, 

 under aheap of rubbish, a square room, strongly vaulted above, and paved with 

 large square stones set in lime ; and under this a lower room, whose roof was 

 supported by rows of square pillars, about half a yard high ; the upper room 

 had two niches like, and perhaps in the nature of, chimnies, on each side of 

 every corner or square, which in all made the number l6; the pavement of 

 this room, as also its roof, were tinged black with smoke. The stones used in 

 arching the upper room have been marked, as joiners do the deals for cham- 

 bers ; those I saw were numbered thus X. XI. XIII. The other inscriptions 

 were all found near the Housesteads, a place so called from the abundance of 

 ruins there, about half a mile from Busygap towards the west, just within the 

 Roman wall; among the ruins I found several pedestals, two or three pillars, 

 two images, but somewhat defaced. 



In my journey into Northumberland I found Watling-street very visible from 

 near Ebchester, almost to Corbridge, which is about 7 miles. From hence I 

 travelled on this street almost to Resingham ; and it is very visible all this way ; 

 about a mile south from Resingham there is a pillar of about 8 feet in length, 

 which has stood by the way side, but is now fallen ; I got a brass medal which 

 was found here a year ago ; the emperor's name worn out, AVG.PIVS. very 

 legible, but by the figures of other medals I take it to be Antoninus ; on the 

 reverse a wolf, without any inscription. 



The next Roman town I visited was Rochester: Watling-street is very visible 

 some part of the way, but how far I cannot tell, not having traced it. I can- 

 not say this is the largest, but think it has been one of the best fortified places 

 the Romans have been masters of in the north ; and indeed it stood in need of 

 being so, since it was not only a frontier town, but was surrounded by enemies. 

 From this place I returned to the Roman wall at Carrow, between which and 

 Walwich, the wall has been repaired, and fronted with its old stones again. 



On the Planting and Culture of Tobacco in Ceylon. By Mr. Slrachan. 



N°!279, p. 1134. 



There are here two sorts of tobacco, both which are called dunkol, that is, 

 a smoking leaf, for dun is smoke, kol a leaf; the one named hingele dunkol, 

 or singele dunkol, for they make no distinction of h and s : the other is called 

 dunkol kapada, which is very intoxicating, and much stronger than the former. 

 They are the same species, the difference being only in the cultivation. 



The natives clear a little piece of ground, in which they sow the seed of to- 

 bacco, as gardeners do parsley and coleworts ; against the time that this is ready 

 for transplanting, they choose a piece of ground, which they hedge about; 



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