OE DENISON UNIVERSITY. 
I I 
by rubbish from neighboring quarries and railroad cuts at the time of 
examination. The color of the stone is drab and in places dark red. 
A fragment of the glabella of Illoenus Daytonensis, and a movable 
cheek, probably of the same species were found here. The fauna 
consists chiefly, however, of various corals, such as Heliolites^ Lyellia^ 
Haly sites, Favosites, Heliophylliim, Diphylliim and Streptelasma. The 
superposed layers of the Dayton limestone are drab in color, and con- 
tain quite a large percentage of magnesia. 
Fair Haven. — The character of the fauna is much the same as 
that of Ludlow Falls, with the exception of certain additions. Striato- 
pora occurs in considerable abundance. Trilobites, brachiopods, and 
gasteropods are rare. On the other hand various bryozoans of the 
families Sir ictopor idee and Monticuloporidoe are seen in moderate abun- 
dance. 
Camp Co7‘win. — A mile east of Dayton lies a long range of hills, 
the most northern promontory of which is called Camp Corwin. On 
the crest of several of the hills near by several feet of Clinton rock are 
seen, of crinoidal structure, with few recognizable fossils. The color 
varies from pink to deep red. Some of the courses contain a large 
percentage of iron. 
Todds Fork. — The exposures are three miles north of Wilmington, 
chiefly on the north side of the creek. Five feet of sandy rock re- 
ferred to the Medina Group are exposed. Above this rise eighteen feet 
of Clinton rock, the lower courses being white limestone, quite heavi- 
ly bedded, then more reddish rock of the same nature, changing into 
quite a heavy deposit of reddish rock above, containing much iron. 
The last bed is the fossiliferous one and has yielded so far: Illoenus 
anibiguus, I. Daytonensis, Proetus determinatus , Dalmanites Werthneri, 
Orthoceras Jamesi, O. incepium, Raphistoma affinis, Orthis elegantula, 
Rhynchonella scobina, SFophomena rhomboidalis, Phcenopora platypJiylla, 
Ptilodictya expansa, Clathropora, Zaphi'entis, and Streptelasma. 
A comparison of the faunae of the different localities so far men- 
tioned will show that there is considerable variation in the distribution 
of the different species. The most striking feature is the comparative 
absence of trilobita, gasteropoda, and brachiopoda, and the large de- 
velopment of the corals at Ludlow Falls and Fair Haven, the two 
more western exposures. In a line almost parallel with these are the 
Soldiers’ Home, Fauver’s, and Brown’s quarries. In this line the cor- 
