N-OETHUMBEKLAND AXD DUEHAlVr. 69 



Darlington, Gateshead, Hartlepool, Stockton, Sunderland, South. 

 Shields, Sedgfield, Stanhope, Staindrop, and Wolsingham. As the 

 map will show, we have traced out eleven drainage districts, the 

 first four of which correspond to the Cheviot-land vice-county*" 

 of Watson's CyleU Britannica, the second four to his southern 

 division of ISTorthumberland, which we may call Tyne-land, and 

 the last three to the county of Durham. In round numbers we 

 may say the area of Cheviot-land is 800 square miles, of Tyne- 

 land 1150 square mUes, and of Durham 950 square miles; and 

 we would ask the special attention of our readers to these vice- 

 counties, as we intend to give a separate list of the plants of each, 

 or, to speak more accurately, to give, under each species, the ini- 

 tial letter C, I^, and D of the vice-counties in which it grows. 

 The districts which we have defined are as follows : — 



1. Cheviox-land vice-cotji^tt. 



1. Tweed and Till district. 



2. ISTorth- eastern district. 



3. Aln district. 



4. Coquet district. 



2. Tyne-land vice-countt. 



5. Wansbeck district. 



6. l^orth Tyne district. 



7. South Tyne and Allen district. 



8. South-eastern district. 



3. DcTRHAir (vice) cotjntt. 



9. Derwent district. 



10. Wear district. 



11. Tees district. 



"We give, in the first place, a table, showing the distribution 

 of the one hundred and eight boreal species through the eleven 

 drainage districts. 



* Mr. Watsijii, in ('ybde BriUiimka, divides Britain into one liundred and twelve uf tliesa 

 vice-counties. 



