200 bulletin: museum of Comparative zoology. 



weathering it becomes a mass of rusty yellow fragments. Fossils are 

 very plentiful in the upper part of the quarry. The Jewe covers a 

 large area north of Wesenberg and small quarries and ditches furnish 

 many exposures. I saw the Jewe further west beyond Nemme, about 

 seven miles southwest of Reval and at St. Mathias, five miles south of 

 Baltishport. x^t both these localities the fossils and lithology were 

 the same as at Jewe itself and the formation is throughout its extent 

 a very distinctive one. The most common and characteristic fossils 

 are: — Platystrophia lynx (very robust variety), Cliiambonites schmidii, 

 Hemicos mites extraneus, and Poramboritcs vcntricosiis. Equally charac- 

 teristic are the peculiar conical bodies figured by Schmidt (44, p. 331). 

 These appear to be of organic origin, but their exact nature is not 

 known. 



Kegel formation. D2 and D3 (the Kegel, Wassalem and, west of 

 Reval, the "Wesenberg") of Schmidt. 



At the typical locality, at Kegel, southwest of Reval, about eight 

 feet of strata are exposed in two quarries about one and one half miles 

 west of the station. The strata here are limestone without shale, in 

 layers two to six inches thick. When fresh the limestone is blue and 

 fine grained, but weathers to a yellow shaly mass. The fossils weather 

 more rapidly than the matrix and the rock is left full of holes. The 

 most abundant fossil is Cyclocriniics spasskii, which occurs in immense 

 numbers. Clitambonites anomalus and Asaphiis kegelensis are also 

 quite common. The country south of Kegel is very flat and the rock 

 everywhere near the surface. Following the railroad or highway 

 southwest from Kegel station, the Kegel beds with their characteristic 

 fossils are seen in ditches and shallow quarries till one comes to a 

 broad low ridge which is made up of a very different rock, to which 

 the name Wassalem has been given. At the large ciuarries in Wassa- 

 lem, the strata are light gray to white, very coarse-grained massive 

 limestone, the lower ten feet with feebly developed partings, the upper 

 three feet very irregularly bedded and containing some shaly lenses. 

 The lower part is quarried in large blocks, up to three feet in thickness, 

 for use as a marble. In this portion there are few fossils, other than 

 joints of the columns and plates of Hemicosmites. Weathered pieces 

 show that the rock is practically made up of these. The upper three 

 feet contain lenticular and cross-bedded strata and lenses of fine- 

 grained bulf limestone with numerous specimens of Illaenus. Fossils 

 may be found in this upper portion, especially in pockets where the 

 limestone has decomposed, leaving a mass of yellow, calcareous earth. 

 The most common fossils are bryozoans and Hemicosmites. The 



