FAUNA AND FLORA OF THE TRIAS OF THE BRITISH ISLES. 163 
the river Trent about twenty yards (or rather less) from the spot where 
the footprint was found, and in the excavations entirely disappeared. 
The surface of the greenish (and red) sandstone is here frequently 
covered with ripple-marks of various sizes, ‘and with considerable 
variation in the distance between the crest and furrows of each. There 
are also sun-cracks both along the furrows and preserved separately, 
having a honeycomb arrangement formed of quadrilateral areas divided 
by raised ridges, rain-pittings, silt-marks, &c., and pseudo-morphs of 
salt-crystals (only one specimen of these was found). The footprint 
referred to was the only organic object found, unless some tracks, 
probably of invertebrates, are sufficiently definite to include here. The 
specimen came to light through the finding of two slabs of supposed foot- 
prints at the top of the sandstone by the gully mentioned, which were 
reported to the writer, but turned out to be inorganic casts of some 
concretionary structure. Within the sandstone similar cavities were 
filled like a geode with thin films of pink and orange-coloured fibrous 
gypsum. 
Investigation of the Igneous and Associated Rocks of the Glen- 
saul and Lough Nafooey Areas, Co. Galway.—Report of the 
Committee, consisting of Professor W. W. Warts (Chair- 
man), Professor S. H. Reynoups (Secretary), Mr. H. B. 
Mavre, and Mr. C. I. GARDINER. (Drawn up by Mr. C. I. 
Gardiner and the Secretary.) 
Mr. C. I. Garprver and the Secretary visited Connemara in April and 
completed their field work on the Glensaul district, commencing, in 
addition, to map the Lough Nafooey district. 
The Glensaul district is a small one, measuring only about 2 x 1 
miles. It is about three miles S.W. of the Southern extremity of the 
Tourmakeady district, recently described,’ of which it is clearly a con- 
tinuation, the type of sedimentary rock met with in the two being prac- 
tically identical. The general succession is: F 
Ill. ?Bala Beds—conglomerate and sandstone. 
These have not been studied. 
II. Llandeilo Beds. 
(5) Calcareous gritty tuff, passing in places into fairly 
pure limestone, and enclosing hands and patches 
of limestone breccia and bands of highly fossili- 
ferous limestone, which in some cases has been 
shattered by earth movement . . : . Thickness doubtful. 
(4) Very coarse tuff or breccia mainly composed of 
felsite fragments ; . < : . 750 feet, 
(3) Tuff coarse and fine with occasional patches of 
calcareous beds . : : ; : : . 150 feet. 
(2) Great felsite sill of Tonaglanna and Greenaun ._‘11,200 feet. 
(1) Tuff with some grit , : ; 5 : . 600 feet. 
! Quart. Journ. Geol, Soc., vol. xv. 1909, pp. 104-153. 
M 2 
