at the same time made the Cardike. I shall give you my further reasons for this conjecture, and nothing more than conjecture can be expected in such matters. [Illustration:42·2ᵈ. +Bricantiæ Pars+] [Sidenote: _Old_ +Hermen Street+.] [Sidenote: _The_ +Cardike+.] The road which we suppose the original stem of the Hermen Street goes in a direct line, and full north and south from Durobrivæ, or Caster, to Sleford; and there, for aught I know, it terminates. It is manifest, that if it had been carried further in that direction, it would have passed below Lincoln heath, and arrive at the river where it is not fordable. It parts from the present and real Hermen Street at Upton, a mile north of Caster; but this is continued in a strait line, which demonstrates that it is the original one: the other goes from it with an angular branching. This traverses the river Welland at Westdeeping, and is carried in a high bank across the watery meadows of Lolham bridges.[6] These are numerous and large arches made upon the road, to let the waters pass through, taken notice of by the great Camden as of antiquity; and no doubt originally Roman: then it crosses the Glen at Catebridge, (whereabouts it is now called King’sgate, _via regia_) to Bourn, (where Roman coins are often found, many in possession of Jos. Banks, jun. esq.) so to Fokingham and Sleaford. It is now called Longdike. All along parallel to this road runs a famous old drain, called _Cardike_.[7] Mr. Morton has been very curious in tracing it out through his county, Northamptonshire. I am sorry I have not yet had opportunity to pursue his laudable example, in finishing the course of it through Lincolnshire: but as far as I have observed it, it is marked in the map. This is a vast artificial canal drawn north and south upon the edge of the fens, from Peterburgh river to Lincoln river, about fifty mile long, and by the Romans without all peradventure. It is taken notice of by serjeant Callis, our countryman, in his readings on the sewers. That wise people, with a greatness of thought peculiar to themselves, observed the great use of such a channel, that by water carriage should open an inland traffic between their two great colonies of Durobrivæ and Lindum, or Lincoln, without going round the hazardous voyage of the Estuary: just such was the policy of Corbulo in Tacitus, Annal. xi. _Ne tamen miles otium indueret inter Mosam Rhenumque trium & viginti millium spatio fossam produxit, qua incerta oceani evitarentur._ And lest the soldiery should be idle, he drew a dike for the space of three and twenty miles between the Maese and the Rhine, whereby the dangers of the ocean are avoided; which is exactly a parallel case with ours. Besides, it is plain that by intercepting all the little streams coming down from the high country, and naturally overflowing our levels, it would much facilitate the draining thereof, which at this time they must have had in view. This canal enters