82 On the Origin and Distribution of the British Flora.
as Oyn's Brook. It rises north of the railway, in the parish
of Feering, and is known as Domsey Brook until it enters
East Thorpe. Thence it flows through Massing and Inworth
to its confluence. Another small rivulet enters the Black-
water near here, on the same (left) bank. Rising on Tiptree
Heath, in the parish of Messing, it flows north-west through
Great Braxted and Inworth to the bridge below Gray's Mill,
Kelvedon. At Rivenhall End another stream enters the
Blackwater on the other side from Cressing. It is known as
Cressing Brook, and lower down as Rivenhall Brook. Near
Witham the Blackwater receives on its right bank a large
tributary from Bardfield and Braintree. This is known as
the Podsbrook, or below Braintree as the Brain, and, flowing
past Black and White Notley, is inaccurately marked as the
Blackwater in Mr. Gibson's map. The Blackwater enters
the Chelmer navigation at Maldon. The Chelmer rises south
of Debden, flows past Thaxted to Tittey, where it receives on
the right bank a stream from between Chickney and the main
source, to Dunmow, below which it receives a tributary from
Lindsell and Stebbing, and so on to Chelmsford, where it
receives the Cann. The Cann rises near Great Canfield and
High Roothing, and flows past Good Easter and Chignal
St. James to the Warren Farm, where it receives on its right
bank a tributary (the name of which is unknown, but which
might well be termed Roxwell Brook) that rises near Clerks,
between Blackmore and Shellow, and flows through Roxwell.
Nearer Chelmsford the Cann receives on its left bank a tiny
stream from Brick Chignal, and on its right the important
stream, the Wid. The Wid rises near Thorndon Hall,
Brentwood, flows to Mountnessing, where it receives another
stream partly from Navestock, and partly from Blackmore
and Doddinghurst (name ?), on to Margaretting, Widford,
and its confluence with the Cann. The length of the Wid is
stated at thirteen and that of the Cann at ten miles. Below
Chelmsford the Chelmer receives, at Little Baddow, two
affluents on opposite banks; on the north or left bank one
from Holt's Chantry; on the south one from Preston,
Haningfield and Sandon; and lower down the more important