|  | Gentleman's Magazine 1853 part 1 p.128 There is an opening at the bottom, in one corner of the  
building, having much the appearance of a conduit: it is  
arched by a single stone, roughly marked with diamond  
tooling. The course of this channel has not been examined.  
The whole vault has evidently been provided with a covering. 
In its western wall is a projecting ledge, which is shewn in 
the woodcut; on this one or two courses of stones have  
probably rested, stretching inwards. The top by this means  
would be soon contracted that it might be covered over by  
long flat stones; one suitable for the purpose, though  
broken in two, lies on the spot.
 On the western side of the central block of buildings is a  
double range of barracks (B, C); each compartment is sixty  
feet long and fifteen broad. The masonry is exceedingly  
good, and evidently belongs to the first period. In the  
centre of the range between the apartments a deep passage  
runs (K), flagged at the bottom, and apparently  
communicating with flues (N) beneath the rooms. This passage 
shows five courses of masonry in situ. The outer  
walls of these buildings have erections resembling  
buttresses placed against them (I, I), and the same number,  
eight, is appended to each. It is probable, however, that  
they were not intended to strengthen the walls, but were  
connected with the heating of the apartments, for a flue  
goes under the floor from the centre of each bay. The floors 
of the rooms consist of a doubleset of flagstones with an  
intervening layer of clay between them. The floors are not  
supported on pillars as is usually the case in hypocausts,  
but upon dwarf walls; by this means the heated air would be  
carried along the passages with some of the precision we see 
manifested in the galleries of a coal mine. In one of the  
bays formed by the projecting buttresses of this building  
the cranium and several other bones of a man were found. The 
remains of an archway (M) leading into one of the dwellings  
(C) were discovered; it is probable that the other was  
similarly provided.
 There are indications that a range of houses (D), of the  
same character as that which has now been described, stood  
upon the eastern side of the central square.
 In the via principalis, is another vault (H in the  
plan), incroaching on
 
 
    
 the line of the street. It is thirty feet long, eight broad, 
and six deep. At the bottom of it was discovered a piece of  
sculpture representing three nymphs bathing. Mr. Bruce asks  
what can have been the object of so many pit-like chambers,  
and pauses in deciding them to have been baths. But it is  
difficult to conceive them constructed for any other  
purpose, and this piece of sculpture, as well as the  
inscription containing the word ballis (p.125), seem  
to support this opinion.
 Considerable discoveries have also been made at Housesteads  
(Borcovicus) by Mr. Clayton, and at Burdoswald (Amboglanna), 
by Mr. Potter,* both of which are described by Mr.  
Bruce with new illustrations. One of the most interesting  
features of the excavations at the latter place is the  
doorway leading from the northern gate-
 
 |