OCT. — DEC. 1856.] of the Southern Division. 97 
fracture, than those in the more recent formation, some of them 
still retaining in part their color and all the small ridges natural 
to them. This rock is of a bluish color highly crystalline and so 
hard as to receive a good polish. A noticeable feature of these shells 
was, that although they were so numerous as to compose a large 
proportion of the rock, they were, with few exceptions, of the bi- 
valve class. 
Not possessing the means, nor the time to name these shells, I 
do not attempt it. Most of them will be found figured in Sower- 
by's Geological Concholo^y, in Lyell's Manual of Elementary 
Geology, and a few of them in this Journal for June 1840. 
"We obtained parts of what appeared to be two fossil tortoises 
and a few large bivalve shells entirely converted into limestone, a 
number of pieces of fossil wood in limestone ; some with the holes 
made by the teredo nearly filled with calc spar ; these also contain 
knots or the beginning of branches. There was also found at this 
place, an ammonite in good state of preservation measuring some 
15 inches in diameter and about 4 inches in thickness; the out- 
ward whorl of which is partly free from the limestone which en- 
velopes the central part and shows the shell but little altered. 
This bed of limestone was found to be narrow, not being more 
than half a mile wide in the widest place ; we traced its length for 
about two miles south of the village and could see its outcrop for 
about a mile further. Persons were sent to follow this bed to its 
southern extremity, who returned with fossils and minerals ; plain- 
ly indicating that although its continuous outcrop is not more than 
about four miles in length it does extend beneath the surface to 
the village of Pullumpardee near the Coleroon, where it again 
crops out and is wrought. 
From the south of a small rivulet, which runs across it, the rock 
and fossils appeared to be more silicious, and frequent masses of 
granite and small pieces of sandstone were found among them. 
Now considering its extent from Pullumpardee, and that from the 
rise of ground near Giridimungalum those high denuded ridges, 
like those where the fossils are so numerous, can be seen extending 
in a north-easterly direction as far as the eye can reach, and also 
