RAYMOND: CORRELATION OF THE ORDOVICIAN STRATA. 199 
was able to find the formation in another small, shallow, old quarry 
at Wannamois, and in a small ditch at Tolks. The strata here consist 
of thin-bedded (layers two to four inches thick) gray and almost white 
limestone, rough to the touch, full of silica, and with silicified fossils. 
The fossils included Echinosphaerites aurantium, which species we also 
found in the lower layers of strata assigned to the next formation, the 
Jewe, at the quarry south of the Guthof at Kuckers, and at Aluver, 
north of Wesenberg. As this species does not occur in the typical 
Jewe, I propose to extend the Itfer to include all the strata at the above 
localities which contain Echinosphaerites. These strata lack the 
shale of the Kuckers member and are lithologically unlike the Jewe, 
as they weather to a grayish white instead of a rusty yellow. 
The geographical distribution of the Itfer is unknown. It is 
difficult to trace, as it has few fossils peculiar to it, and no very dis- 
tinctive lithological characteristics. It has not been identified outside 
the vicinity of the typical locality, but Baron Toll called our attention 
to an outcrop of strata on his estate which were stratigraphically a 
few feet above the typical Kuckers in the “Graben,” and which may 
prove to be Itfer. They consisted of a thin-bedded soft, earthy, gray 
limestone, and contained too few fossils to permit of positive identifi- 
cation of age. 
Schmidt estimated the thickness of the Itfer at twenty to thirty feet. 
Jewe formation. Dj, (Jewesche schicht, except for the basal portion), 
of Schmidt, but not including the Kegel and Wassalem. 
The Jewe is a formation with distinct lithological characteristics, 
contains a well-marked and easily recognized fauna, and is well ex- 
posed along a line extending from Gatschina in the Government of 
Petrograd to the coast near Spitham in the northwestern corner of 
Ksthonia. | 
At the type-locality, Jewe, in an abandoned quarry south of the 
railroad there is an exposure of about twelve feet of light gray to 
yellow magnesian limestone of earthy texture. Some layers are more 
shaly than others and weathering brings this out strongly. Still 
higher strata of the same formation are to be seen a mile to the south- 
west on the Gut Eichenheim, where, in similar strata, fossils are some- 
what more plentiful. 
A much better exposure of the Jewe is that at Aluver on the rail- 
road to Kunda, three ntiles northeast of Wesenberg. Here about 
twenty-five feet of the Jewe are shown in a quarry, with the upper part 
of the Itfer, full of Echinosphaerites, exposed at the lower part. The 
rock is a fairly compact bluish limestone with earthy texture; on 
