NOUTHXJMDEKLAND AND DUEHAM. 113 



list of the altitudes of a large number of easily accessible points ; 

 and from these as a basis the elevations which the plants attain 

 were measured by means of the Aneroid barometer, principally 

 during two excursions of a fortnight each, the first, in which he 

 had the company and aid of the Eev. "W. W. Newbould in Allen- 

 dale, "Weardale, and Teesdale in the summer of 1865, and the 

 other in Coquetdale and the Cheviots in 1866. We defer a 

 general summary of the list to its conclusion. 



I. FLOWERING PLANTS. 



Class 1. DICOTYLEDONS OR EXOGEISTS. 



Division 1. THALAMIELOll^. 



Order 1. EANUNCULACE J^:. 



1. THALICTRUM, L. 



1. T. aljn'nmii; li. Native. Highland type. AreaD. Eange 2. 



In Teesdale on "Widdy Bank Eell, beginning at the head of the 

 streams and following them dov/nwards, but not abundant, and 

 it has been gathered by Mr. W. H. Brown as low down the river 

 as "Winch Bridge. Eange of altitude 300-500 yards. 



2. T. minus, L. Native. Scottish type. Ai'ea C, N, D. 



Eange 1. 



Common along the coast-line in sandy ground : Alnmouth, 

 Warkworth, Bambro', Newton, Blyth, Hartley, Cullercoats, 

 Tynemouth, South Shields, Castle Eden, Hartlepool, Seaton 

 Carew, &c. Inland we only know the typical plant clearly 

 from Tunstall Hill (W. H. Brown) on the Magnesian Limestone. 



3. T. Jlexuosum, Vdch. Native. Intermediate type. Area C, 



D. Eange 1. 



The typical form occurs on the bank of the Tweed at Spring 

 Gardens and Milne Graden, and in the neighbourhood of the 

 Tees from Newbiggin and Middleton as low down as Baydalcs 



I 



