On the other or east side of the Fleet was a tributary brook called Turnmill brook--a name now surviving in Turnmill Street--which, even in this century, drove flour and flatting mills, and we have indisputable evidence of its industrial powers, in an advertisement in the _Daily Courant_ September 17, 1714, which calls attention to a house in Bowling (Green) Alley,[69] Turnmill Street, which had the power of utilizing "a common sewer with a good stream, and a good current, for purposes of a Mill;" and it was on Turnmill Brook that Cave, the publisher, in 1740, went into an unprofitable partnership with one Lewis Paul, of Birmingham, to work a mill for the utilization of a patent taken out by Paul for a "Machine to spin wool or cotton into thread, yarn, or worsted." This experiment, however, was not a success. [Illustration] The Fleet flowing to its bourne,[70] the Thames, was bridged over at Holborn. Stow says: "Oldbourne bridge, over the said river of Wels more towards the north, was so called, of a bourn that sometimes ran down Oldbourne hill into the said river. This bridge of stone, like as Fleet bridge from Ludgate West, serveth for passengers with Carriage, or otherwise, from Newgate toward the west and by north." This was written in 1598. [Illustration] After the great fire of 1666 the Fleet was widened, and canalized, from the Thames, to Holborn Bridge; thence, to its source, it took its natural course, and, although there were then three bridges over it, from Holborn to Newgate Street, set close, side by side, yet it was considered too narrow for the traffic, as we see in an Act of Parliament passed in 1670 (22 Car. II., cap. 11), entitled "An additional Act for the Rebuilding of the City of _London_, Uniting of Parishes, and Rebuilding of the Cathedral and Parochial Churches within the said City." Section 7 says: "And, whereas the Way or Passage of _Holborn-Bridge_ is now too strait, or incommodious for the many Carriages and Passengers daily using and frequenting the same, and is therefore necessary to be enlarged; Be it therefore likewise enacted, That it shall and may be lawful for the said Mayor, Aldermen, and Commons, so to enlarge and make wider the same, as that the said Way and Passage may run in a Bevil Line from a certain Timber house on the North side thereof, commonly called or known by the Name or Sign of the _Cock_, into the Front of the Buildings of a certain Inn called the _Swan_ Inn, situate on the North side of _Holborn Hill_, as aforesaid."