322 



Notes and Comments, 



testimony to the recession of tlie falls. The section, as will be 

 seen by the key figfure, is as follows : — 



W2. Whin Sill 30 ft. 



S2. Shale, thinning- out ... ... ... .. ... ... 2 ,, 



Wi. Whin ... .. ... ... ... ... ... ... 9 ,, 



Si. Shale, altered, with superinduced prismatic jointing-... 15 ,, 



rHard Limestone, with pyrites ... ... ... ... 8 ,, 



L. -! Hard, fossiliferous, crinoidal limestone ... ... 20 ,, 



ICoralline limestone... ... ... ... ... ... 6 ,, 



The limestone is altered and saccharoidal to a distance of 35 feet 

 below the base of the whin ; the latter is of the normal type 

 described by Teall. See Sedgwick, Trans. Camb. Phil. Soc, 

 1823; W. Hutton, Trans. Nat. Hist. Soc. North Durham, 1832, 

 p. 6 ; Phillips, ' Illustrations of the Geology of Yorkshire,' 1836, 

 Pt. 2, pi. xxiii. ; Phillips, 'Yorkshire Rivers,' etc., 1885, p. 46, 

 pi. 8; Teall, Quart. Jour. Geol. Soc, Vol. xl., 1S84, p. 640. 



ROOTS OF MEDULLOSA ANGLIC A. 



Mr. E. A. Newell Arber has contributed an important paper 

 to the March ' Annals of Botan}^' in which the structure of 

 a specimen of Mediillosa auglica, probably from the Lower Coal 

 Measures at Stalybridg'e, is figau'ed and described. The specimen 

 is in the Binney collection in the Woodwardian M'liseum, Cam- 

 bridge. His examination has resulted in a more complete 

 knowledge of the thin-walled tissues which lie between the 

 xylem and the periderm. The most noteworthy points are : the 

 presence of a thin zone of phelloderm, the structure of the 

 phloem, and the discovery of lateral sieve-plates on the phloem- 

 elements of both the stem and roots. The first British specimens 

 of Mediillosa (a genus of Palaeozoic plants belonging' to the 

 C3'cadofilices) were described bv Dr. Scott in 1899. 



A COMMON BUZZARDS NEST. 



In the 'Memoirs and Proceedings of the Manchester Literary 

 and Philosophical Society,' issued on 30th July, Mr. R. \^'. 

 Ellison has an interesting- note on a nest of the Common Buzzard 

 in the Lake District. Notwithstanding the increasing persecu- 

 tion of gamekeepers and collectors, and the removal of large 

 tracts of forest, the bird still exists in the Lake District, 'and 

 Mr. Ellison has been able to make interesting notes on the 

 habits of the birds. The accompanying photograph (Plate IX.) 

 shows a typical Buzzard's nest, the block having been kindly 

 lent by the Manchester Society. 



Naturalist, 



