258 FIELD CoLuMBIAN MusEuM—GEOoLoey, Volt. II. 
authors. Thus it appears that, in passing from Utica to Eighteen 
Mile Creek, a distance of a little less than 200 miles, the beds thin 
from 1,142 to 76 feet. In the next 130 miles, however, there is com- 
paratively little change in thickness. 
The Moscow and Bethany localities have been well known col- 
lecting grounds for many years. H. A. Green* called attention 
to them as far back as 1866, and still the supply of well preserved 
fossils is apparently as good as ever. 
Moscow: ‘The outcrop at Moscow, from which the Moscow shale 
received its name, afforded to the writer its characteristic fauna. 
Fossils were most abundant at the exposures along the creek on the 
farmof Mr. W. H. DeForrest (Plate LXXIX) about a mile northeast of 
town. Another exposure was found about a quarter of a mile north 
of the station where a creek passes under the railway track, and 
by following the creek up stream, some brachiopods were obtained. 
Near East Bethany, six exposures were visited. These are indi- 
cated on the map (Plate LX XX) by the field numbers, B4 to Bg 
inclusive. 
Ba is situated about a mile and a half west of the station at the 
point where the railroad cuts through the top of the divide between the 
valley of the Genesee River, which empties into Lake Ontario, and 
that of Tonawanda Creek, which empties into the Niagara River 
only a short way from Lake Erie. This exposure is about three ~ 
quarters of a mile in length, and has a depth of, perhaps, 15 feet, 
where the road crosses it. From this point it tapers down to nothing 
at each end. This ridge is the highest elevation of land in this 
locality. Fossil corals and brachiopods are especially abundant 
here, but many of the other classes of invertebrates are also found. 
Hypsocrinus fieldt, described} by Frank Springer, and the author, 
came from this locality. The Encrinal limestone appears at the 
top of the exposure, so that the shale from which the fossils were 
obtained is the upper part of the Hamilton shale. 
Bs is situated about a mile southeast from the station at the Peck 
& Wood tile factory. Here the shale is weathered so that it can be 
plowed. A layer about a foot thick at the top, is very rich in brachio- 
pods. Neucleospira concinna is found here, with the hair-like spines 
preserved. Tvropidoleptus carinatus is very abundant and attains 
* Am. Jour. Sci., 2nd Ser., Vol. 41, pp. 121-23. 
m+ Field Col. Mus, Pub., Geol. Series, Vol. II, pp. 267-271. 
