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 Rev. W. W. Newbould in Allendale, 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 EXOGENS.
Division 1. THALAMIFLORAE.
Order 1. RANUNCULACEAE.
1. THALICTRUM, L.
1. T. alpinum, L. Native. Highland type. Area D. Range 2.
In Teesdale on Widdy Bank Fell, beginning at the head of the streams and following them downwards, but not abundant, and it has been gathered by Mr. W.H. Brown as low down the river as Winch Bridge. Range of altitude 300-500 yards.
2. T. minus, L. Native. Scottish type. Area C, N, D. Range 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. flexuosum, Rich. Native. Intermediate type. Area C, D. Range 1.
The typical form occurs on the bank of the Tweed at Spring Gardens and Milne Garden, and in the neighbourhood of the Tees from Newbiggin and Middleton as low down as Baydales
