Mr. J. W. Dawson on Fossils from Nova Scotia. 159 
a large Dinosaurian dorsal vertebra, not unlike that of Megalosaurus, 
several Crocodilian teeth, and numerous large scales of Lepidotus, 
together with a few Molluscs (Paludina, Unio, &c.), some Ento- 
mostraca, and Lignite. Two miles from Montserrate, in a N.E, 
direction, is the Plantaforma, another hill of the same formation, but 
loftier. The shales here also yielded similar fossils. 
These fossiliferous shales and conglomerates dip to the N.W. 
towards the Bay, and appear to overlie a similarly inclined whitish 
sandstone, which rests against the gneissose hills ranging north- 
eastwardly from the point of St. Antonio. 
3. “On a Terrestrial Mollusc, a Chilognathous Myriapod, and 
some new species of Reptiles, from the Coal-formation of Nova 
Scotia.” By J. W. Dawson, LL.D., F.G.S. &c. 
On revisiting the South Joggins in the past summer, Dr. Dawson 
had the opportunity of examining the interior of another erect tree 
in the same bed which had afforded the fossil stump from which the 
remains of Dendrerpeton Acadianum and other terrestrial animals were 
obtained in 1851 by Sir C. Lyell and himself. This second trunk 
was about 15 inches in diameter, and was much more richly stored 
with animal remains than that previously met with. There were here 
numerous specimens of the land-shell found in the tree previously 
discovered in this bed ; several individuals of an articulated animal, 
probably a Myriapod; portions of two skeletons of Dendrerpeton; 
and seven small skeletons belonging to another Reptilian genus, 
and probably to three species. 
The bottom of the trunk was floored with a thin layer of carbonized 
bark. On this was a bed of fragments cf mineral charcoal (having 
Sigillarioid cell-structure), an inch thick, with a few Reptilian bones 
and a Sternbergia-cast. Above this, the trunk was occupied, toa 
height of about 6 inches, with a hard black laminated material, 
consisting of fine sand and carbonized vegetable matter, cemented by 
carbonate of lime. In this occurred most of the animal remains, 
with coprolites, and with leaves of Noeggerathia (Poacites), Carpo- 
lithes, and Calamites, also many small pieces of mineral charcoal 
showing the structures of Lepidodendron, Stigmaria, and the leaf. 
stalks of Ferns. The upper part of this carbonaceous mass alter- 
nated with fine grey sandstone, which filled the remainder of the 
trunk as far as seen. ‘The author remarked that this tree, like other 
erect Sivillarie in this section, became hollow by decay, after having 
been more or less buried in sediment ; but that, unlike most others, it 
remained hollow for some time in the soil of a forest, receiving small 
quantities of earthy and vegetable matter, falling into it, or washed in 
by rains. In this state it was probably a place of residence for the 
snails and myriapods and a trap and tomb for the reptiles; though 
the presence of coprolitic matter would seem to show that, in some 
instances at least, the latter could exist for a time in their under- 
ground prison. ‘he occurrence of so many skeletons, with a hundred 
or more specimens of land-snails and myriapods, in a cylinder only 
15 inches in diameter proves that these creatures were by no means 
rare in the coal-forests ; and the conditions of the tree with its air- 
