376 Reports and Proceedings— 
The fossils chiefly occur in ‘‘ fossil range,’’ which runs nearly N.N.W. 
for over 100 miles; they present a thoroughly Carboniferous (marine) 
facies, several of the species being identical with or closely allied to 
well-known Carboniferous Limestone forms. Out of more than 20 
species there is only one (a Pachypora, allied to P. cervicornis) which 
could be regarded as Devonian. Corals, crinoidal stems, Polyzoa, 
Brachiopoda, and two large species of Aviculopecten make up the list. 
In the Appendix some of these were described. The corals are chiefly 
represented by Amplexus and Stenopora; whilst amongst the Polyzoa 
are two species of the very curious American genus Evactinopora, only 
known hitherto from the Lower Carboniferous Rocks of Illinois. The 
ubiquitous Fenestella plebeva is extremely abundant. 
3. “Notes on the Geology of the Troad.”’ By J. S. Diller, Esq. 
Communicated by W. Topley, Esq., F.G.S. 
This paper gave a brief account of the results obtained by the author 
whilst attached to the United States Assos. Expedition. Together 
with a geological map (scale 1: 100,000), this was sent to Mr. Topley 
for the service of the new Geological Map of Europe (and its borders), 
which is now being prepared by a Committee of the International 
Geological Congress. 
The country described is that lying south and west of the river 
Menderé (Scamander). The sedimentary rocks may be divided into 
three great groups :— 
(1) An old, possibly Archeean, highly crystalline series, forming the 
mountainous lands of the Ida range (5750 feet), but also appearing in 
smaller detached areas to the W. and N.W. Probably these have 
existed as islands from early time, and around these the later rocks 
have accumulated. Mt. Ida itself is almost a dome, the lowest rocks 
(tale schists) occupying the summit. On the northern slopes there is 
true gneiss. No igneous rocks enter into the structure of this moun- 
tain. At different horizons there are bands of coarsely crystalline lime- 
stone, and as far as can be seen this series is conformable throughout. 
(2) Resting on these old rocks and in part made up of their remains 
is a series of partially crystalline rocks, chiefly limestone. It is proba- 
ble that this series is in large part of Cretaceous age; but it contains 
rocks which are older, possibly Paleeozoic. Eocene fossils have lately 
been discovered by Mr. Frank Calvert, which also may have come from 
this series. The rocks in the 8. of the Troad, hitherto supposed to be 
Lower Tertiary, are now known to be of later date. Sharply marked 
off from these older rocks are the Upper Tertiaries; these are of two 
ages, occurring in two distinct areas. 
(3) The Upper Miocene, which fringes the western shores of the 
Troad, and forms a broader band at the north-west corner in the lower 
course of the Menderé. Hissarlik is built on this. These beds are 
marine, and belong to the Sarmatian Stage. The Troad is the most 
south-westerly point at which the Dactra-kalk is yet known. 
(4) Freshwater beds, which occur in force in the interior of the 
country, between the Menderé and the south coast, and in patches 
near the coast. These are Upper Miocene or Lowest Pliocene. 
Later than these are the Pliocene beds of the great plain of Edsemet. 
‘I'he igneous rocks are of various ages, but most are of Tertiary date. 
