516 ON THREE-TOED FOOTPRINTS FROM TRIASSIC CONGLOMERATE. 
footsteps; but I was unable to find either*. Once or twice I had some 
slight hope, as the beds grew finer in texture occasionally ; but they 
generally soon acquired their normal character. Nothing satis- 
factory can be done there till a little finer weather comes. 
I prepared sections from the stone and also from some of the pieces 
in the quarry near where it was said to have been found. Under 
the microscope the slide from the stone itself shows clearly its con- 
glomeratic character. One of the pebbles of an angular shape contains 
Foraminifera, some of the species of which are identical with those 
found in the bed on the new road leading from the Avon river to 
Clifton down, and marked No. 5 in Mr. Stoddart’s section of the 
Avon beds; there are also a few small shells like Rotaha; but I 
cannot have the species identified, and it may perhaps be new. 
The greater part of the slide consists of minute reddish grains prin- 
cipally coloured by iron, and minute fragments of blackish particles 
of uncertain origin. 
Another section of the same stone consists wholly of an oolitic 
structure closely resembling, if not quite identical with, that shown 
by the bed exposed in a roadside quarry about three miles north of 
Cowbridge, near Ystrad Owen; this bed so far as I know, has not 
been identified with any other bed either in the Avon or any other 
section. 
No. 3 slide is not from the stone itself, but from one in the same 
quarry, and contains a common species of Syringopora, a coral 
frequent in the Carboniferous Limestone and not confined to any 
particular horizon ; it seems to occur very abundantly in the con- 
glomerate, as all along the road-side, where the walls are built of it, 
patches of this coral occur here and there in the blocks. 
No. 4 slide is also from a piece from the same quarry, and contains 
Spirorbis nearly as abundantly and in much better preservation 
than in any pieces I have found before. I have found them in 
pretty fair condition in a bed at the old quarry at Rurbina, about a 
mile east of Castle Coch, where they occur at the base of the Lower 
Carboniferous slates. 
This leads me to believe that this conglomerate was formed from 
the débris of a shore where the lower Carboniferous shales and 
limestone formed the sea-cliff, and where no trace of other beds 
were present ; no doubt they were laid down exactly as the beds in 
the Channel are at present from the washings of the cliffs at 
Penarth. 
DIscuUssIoN. 
Prof. Hutt pointed out that Prof. Marsh had suggested that the 
supposed footprints of birds in the Connecticut valley may probably 
hive been made by Dinosaurs. 
* Additional specimens of similar footprints have since been found ‘“puddled 
together ” at Newton. 
