(7 Henry V. A.D. 1419, Journal 1, fol. 61.) "It is granted that the _risshbotes_[14] at the Flete and elsewhere in London shall be taken into the hands of the Chamberlain; and the Chamberlain shall cause all the streets to be cleansed."[15]
The northern heights of London, the "ultima Thule" of men like Keats, and Shelley, abound in springs, which form the bases of several little streams, which are fed on their journey to their bourne, the Thames (to which they act as tributaries), by numerous little brooklets and rivulets, which help to swell their volume. On the northern side of the ridge which runs from Hampstead to Highgate, birth is given to the Brent, which, springing from a pond in the grounds of Sir Spencer Wells, is pent up in a large reservoir at Hendon, and finally debouches into the Thames at Brentford, where, from a little spring, which it is at starting, it becomes so far a "fleet" as to allow barges to go up some distance.
[Illustration: SHEPHERD'S WELL, HAMPSTEAD.]
On the southern side of the ridge rise the Tybourne, and the Westbourne. The former had its rise in a spring called Shepherd's Well, in Shepherd's Fields, Hampstead, which formed part of the district now known as Belsize Park and FitzJohn's Avenue, which is the finest road of private houses in London. Shepherd's Well is depicted in Hone's "Table Book," pp. 381, 2, and shows it as it was over fifty years since. Alas! it is a thing of the past; a railway tunnel drained the spring, and a mansion, now known as The Conduit Lodge, occupies its site. It meandered by Belsize House, through St. John's Wood, running into Regent's Park, where St. Dunstan's now is, and, close to the Ornamental Water, it was joined by a little rivulet which sprang from where now, is the Zoological Gardens. It went across Marylebone Road, and, as nearly as possible, Marylebone Lane shows its course; then down South Molton Street, passing Brook Street, and Conduit Street, by Mayfair, to Clarges Street, across Oxford Street and into a pond in the Green Park called the Ducking Pond, which was possibly used as a place of punishment for scolds, or may have been an ornamental pond for water-fowl. Thence it ran in front of Buckingham Palace, where it divided, which was the cause of its name. Twy, or Teo (double), and Bourne, Brook--one stream running into the Thames west of Millbank, doing duty by the way in turning the Abbey Mill (whence the name), and the other debouching east of Westminster Bridge, thus forming the Island of Thorns, or Thorney Isle, on which Edward the Confessor founded his abbey, and the City of Westminster.