THE EAST TEES DISTRICT. 1 83 



The course of the main stream of Tees we have still to follow. 

 It is now a fine large river, and flows with many windings 

 through a richly-cultivated flat country. Along the edge of this 

 drainage-district its general course is towards the north-east, 

 and its banks about Middleton and Dinsdale are often steep and 

 pleasantly wooded. The town of Yarm is on the Yorkshire side 

 of the river not far from the mouth of the Leven. From Yarm 

 up the stream to Worsall is a pleasant sail by boat when the tide 

 is high. Five miles north-east of Yarm is the town of Stockton- 

 on-Tees, the principal part of which stands upon the Durham 

 side of the stream. The following are the rarer plants of the 

 woods and low marshland and sandy fields near the Tees in the 

 neighbourhood of these two towns : 



Epilobiiim a iii^ustifoliiim 

 Galium hore.ile 

 Campanula glomerata 

 Epipactis tnedia 

 Orchis pyramidalis 

 Biitomus umbellalus 

 Sagitlaria sagittifolia. 



NymphcBa alba 

 Trollius europcEUS 

 Lepidiuvi latifoli^wl 

 Saponaria officinalis 

 Cerastiinn aquaticuin 

 Myriophyllum verticillatum 

 CEnanthe crocata 

 ,, Lachenalii 



The thriving town of Middlesbrough, with its docks and blast- 

 furnaces, stands upon the Yorkshire shore just where the river 

 begins to open out into an estuary. A list of the introduced 

 plants of the ballast-hills in the neighbourhood of this town will 

 be given hereafter. From Middlesbrough to Redcar the coast is 

 margined by a series of low marshy fields, intersected by tidal 

 ditches,* in front of which the shore-line is bounded in some 

 places by low undulated sand-hills. The railway runs not farfrom 

 the sea in a direct line between the two points, beneath Eston 

 Nab and the woods of Wilton, and in front of the long straggling 

 village of Coatham. The following are the rarer plants of 

 the salt-water ditches, sand-hills and salt-marshes of this part 

 of the coast, which is, as has been already remarked, the only 

 portion of the North Yorkshire sea-line which furnishes a good 

 supply of the characteristically Maritime species : 



* For a broad open ditch, either of fresh or of salt water, 'stell ' is here the local name. 

 Oct. 1 388. 



