I thought at the time that the sewer was somewhat large for a city of the size of Ypres, and it has since occurred to me that this sewer may have been the ancient bed of the stream Yperlee, which in some past period was arched over.

The street that we followed was, of course, the open sewer for the houses on either hand, and its condition was a credit to the mangy curs that so resented our intrusion.

They think that a sewer in the street, and a pipe leading to it from the house is good drainage.