20 W. D. Lang—Evolution of Stomatopora. 
sections. Bed No. 6 may possibly correspond with their ‘ Lower 
Head,’ though this bed and No. 5 are rather different in their 
development and show more sorting of the materials by water, sug- 
gesting a rearrangement of the ‘head’ or a modified rainwash, perhaps 
in early glacial times, so that they ought to be reckoned rather as 
stratified early glacial gravels. The thickening, however, of these beds 
towards the valley-side and the development of ‘ferri¢rete’ at their 
base, together with the inclusion of large tumbled masses from the old 
cliff at the base of which they accumulated, are points in common with 
- the deposit termed ‘ Lower Head’ on the Cork coast. ‘he Boulder-clay, 
No. 4 of our section, followed by the ‘ Head,’ No. 3, agree precisely 
in their relations, and to a large extent in their general characters, with 
those of Cork. It should be remembered, moreover, that there is 
considerable variation even along the latter coastline in the character, 
development, and sequence of deposits as described by the above- 
mentioned authors, and that a precise correspondence of the beds on 
Fornaght Strand can scarcely be expected. The important features 
insisted on by Messrs. Wright & Muff are the buried rock-cliff and 
the wave-cut rock-platform; and in the characters of these and the 
height above the present plane of wave-erosion and of high-water 
mark the correspondence is so close that we cannot doubt that we are 
dealing with the same features and phenomena. 
A late downward movement! of the coastline is indicated by the 
‘submerged forest’ of Fornaght Strand, which does not appear to 
have been previously noticed, though Hardman ®* in 1873 referred to 
the one near T'ramore as a ‘‘ partially submerged or silt-covered bog,” 
and Kinahan® mentioned various submerged bogs (including the latter 
one) on the south-east coast of Ireland. 
The shore of Fornaght Strand shelves very gently down to the sea, 
and about 30 to 40 feet from high-water mark (horizontal distance) 
the edge of the sheet of peaty soil appears in which the tree-stumps 
are rooted. It forms a wide flat, sloping down slightly and extending 
to an unknown distance seawards below low-water mark, even at 
spring-tides. It is often covered up with sand and not visible near 
the beach at ordinary low tides. The tree-trunks measure 1 to 1} feet 
in diameter at the level at which they are broken off, which is, as 
usual, fairly uniform and close to their base. About thirty rooted 
stools were counted by me on my last visit there'this Summer. 
VI.—Tux Evoturion or STOMATOPORA DICHOTOMOIDES (D’ORBIGNY). 
By W. D. Lane, M.A., F.Z.S., F.G.S., of the British Museum (Natural History). 
LECTO DICHOTONOIDES was the name given by d’Orbigny * 
in 1849 to a specimen figured by Michelin® in 1841 from the 
1 Geikie: Pres. Add. Geol. Soc., 1904, p. xevi. 
2 Hardman: Journ. Roy. Geol. Soc. Ireland, n.s., vol. iv (1877), p. 31 (read 
December, 1873). See also Gout. Mac., 1874, pp. 210-215. 
3 Kinahan: ‘‘ Geology of Iveland,’’ 1877, p. 265. 
4 A. d’Orbigny: Prodrome de Paléontologie stratigraphique universelle, 1849, 
vol. i, p. 288; and Paléontologie Francaise, Terrains Crétacés, vol. v (1854), 
pp. $84, 830. 
_ 5 H. Michelin: Iconographie Zoophytologique, 1840, pl. ii, fig. 10. 
