300 REY. J. F. BLAKE ON A REMARKABLE INLIER _ [ May 1902, 
organisms, and the containing grit is hollowed out where they have 
been dissolved. 
These grits and aggregates are soon meplaced again by black and’ 
white banded shales, whence plants have been obtained and 
ammonites of the type of Hoplites eudoxus. We are here, therefore, 
on nearly the same horizon as we were, when the patch of breccia 
was seen between Garty and Craigie Points, that is, between the 
horizons of Cardioceras alternans and Hopltes eudoxus. 
The second series of brecciated bands is that of which the higher 
portion surrounds the inlier. The brecciation here is on a larger 
scale, and the fragments are more irregularly placed, while the 
associated shales, if such they can be called, include several bands 
of comminuted organisms, in some cases almost entirely composed 
of echinoderm-spines. The fragments at the base of the inlier 
are larger than elsewhere, and make up a greater proportion of the 
whole bed; but there is very little irregularity, as may be seen in 
fe, ALS 292), and the underlying bands of breccia or shale show 
oaane different near the inher from their appearance elsewhere. 
Beyond the inher we return again to uniform shales, though the 
strike of the beds is such that we do not rise much in the series but 
continue in the Hoplites-beds for a long way, which here contain a 
belemnite and a Perisphinetes (like Pallasi, usually called Ammonites 
biplex). he first repetition of breccias after this appears to be 
connected with the beds seen at the entrance to Gartymore Burn 
(fig. 2, p. 293), which can be traced on the shore, where they may 
be expected, from their lie and position, to be found. One of them 
swells out to a thickness of 10 feet by the fragments of foreign 
rock, among which are included here numerous masses of Jsastra 
oblonga, thrown anyhow and crowded together. These have their 
bases either vertical, or upside down, and more rarely in their 
natural position. ‘These masses of coral are fairly large, and 
as they must have grown originally on some solid base, it follows 
that they have been detached from their place of erowth, and 
hurried along to accumulate in one spot where the driving force 
was In some way counteracted. 
Now, these corals cannot have been introduced into the stratum 
after its deposition, for there is no general disturbance of the strata 
overlying them, either on the shore or in the gorge-slope where they 
are seen in fig. 2 (p. 293). Being reef-building corals, they must 
have grown in less than 30 fathoms of water, which gives a limit to 
the depth of the sea from the bed of which they were torn, before 
they were deposited in shallower water. The horizon of the species, 
or rather of any reef-building coral known in Kimeridgian or later 
Jurassic times, is the Lower Portlandian; and here they are not 
seen till after the appearance of Perisphinctes ct. Pallasi, so that the 
sequence is as usual, and the corals are not remanié. But corals 
would scarcely grow where mud and leaves were being deposited, 
tor they require a firm bottom-—perhaps another submerged stack 
of Old Red Sandstone, or one of the preceding grits of the Jurassic 
Series; but, in any case, the mud-deposits must be very local, and 
