passing W. of Great Wymondley runs to Purwell Mill, and joins the Hiz at
Grove Mill.

12. _The Quin_ rises in the neighbourhood of Wyddial, and passing
Quinbury, unites with the Rib at Braughing.

13. _The Rhee_, rising a little E. of Ashwell, has but a few miles to
flow before it enters Cambridgeshire.

14. _The Rib_ rises at Corney Bury, flows E. of Buntingford, thence
turning W. it flows under the bridge at the _Adam and Eve_, runs to
Westmill, Standon and Thundridge, finally uniting with the Lea at
Hertford.

15. _The Stort_ enters Hertfordshire from Essex at a point near Cannon
Wood Mill, and after passing through Bishop's Stortford forms the
extreme E. boundary of the county for some distance before quitting it
near Cheshunt.

16. _The Ver_ rises near Flamstead, is crossed by the Dunstable Road,
N.W. of Redbourn, then recrossed by it. It then skirts St. Albans on the
S. and joins the Colne near Park Street.

In addition to the cutting of the _Lea and Stort Navigation_ already
mentioned, there are other artificial waterways:--

_The Aylesbury Canal_ (a branch of the Grand Junction Canal) crosses the
extreme western neck of the county, from S. of Puttenham to S. of
Gubblecote.