The Fleet river (I prefer that title to the other cognomen, "Ditch"), flowing through London, naturally became somewhat befouled, and in Henry the VII.'s time, circa 1502, it was cleansed, so that, as aforesaid, "boats with fish and fewel were rowed to Fleete bridge, and to Oldburne bridge." We also know, as Stow records, that more springs were introduced into the stream from Hampstead, without effect, either as to deepening or purifying the river, which had an evil reputation even in the time of Edward I., as we see in Ryley's "Placita Parliamentaria" (ed. 1661), p. 340—
"Ad peticionem Com. Lincoln. querentis quod cum cursus aque, que currit apud London sub Ponte de Holeburn, & Ponte de Fleete usque in Thamisiam solebat ita largus & latus esse, ac profundus, quod decem Naves vel duodecim ad predictum Pontem de Fleete cum diversis rebus & mercandisis solebant venire, & quedam illarum Navium sub illo Ponte transire, usque ad predictum Pontem de Holeburn ad predictum cursum mundanmum & simos exinde cariand, nunc ille cursus per fordes & inundaciones Taunatorum & p varias perturbaciones in predicta aqua, factas & maxime per exaltationem Caye & diversionem aque quam ipsi de Novo Templo fecerunt ad Molendina sua extra Castra Baignard, quod Naves predicte minime intrare possunt sicut solebant, & facere debeant &c. unde supplicat quod Maior de London assumptis secum Vice com. & discretionibus Aldermannis cursum pred̄ce aque videat, & quod per visum & sacrm̃ proborum & legalium hominum faciat omnia nocumenta predicte aque que invinerit ammovere & reparare cursum predictum, & ipsum in tali statu manutenere in quo antiquitus esse solebat &c. Ita responsum est, Assignentur Rogerus le Brabazon & Constabularius Turris, London Maior & Vice Com. London, quod ipsi assumptit secum discretionibus Aldermannis London, &c., inquirant per sacramentum &c., qualiter fieri consuevit & qualis cursus. Et necumenta que invenerint ammoveant & manueri faciant in eadem statu quo antiquitus esse solebat."
Latin for which a modern schoolboy would get soundly rated, or birched, but which tells us that even as far back as Edward I. the Fleet river was a nuisance; and as the endorsement (Patent Roll 35 Edward I.) shows—"De cursu aquæ de Fleta supervivendo et corrigendo," i.e., that the Fleet river should be looked after and amended. But the Commission issued to perfect this work was discontinued, owing to the death of the king. (Patent Roll 1 Edward II., pars 1. m. dorso.) "De Cursu Aquæ Flete, &c., reducend et impedimenta removend."
And Prynne, in his edition of Cotton's "Records" (ed. 1669, p. 188), asks "whether such a commission and inquiry to make this river navigable to Holborn Bridge or Clerkenwell, would not now be seasonable, and a work worthy to be undertaken for the public benefit, trade, and health of the City and Suburbs, I humbly submit to the wisdom and judgment of those whom it most Concerns."
So that it would appear, although otherwise stated, that the Fleet was not navigable in May, 1669, the date of the publication of Prynne's book.
As a matter of fact it got to be neither more nor less than an open sewer, to which the lines in Coleridge's "Table Talk" would well apply—
"In Cöln, that town of monks and bones,
And pavements fang'd with murderous stones,
And rags, and hags, and hideous wenches,