202 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
The Wesenberg was believed by Schmidt to be a thin formation, 
the thickness being estimated by him at not more than thirty feet. 
From the width of the outcrop in the vicinity of Wesenberg, one would 
expect a somewhat greater thickness. 
DISTRIBUTION OF THE KEGEL AND WESENBERG FORMATIONS. 
, 
According to Schmidt the outcrops of the Kegel and Wesenberg 
strata form parallel bands extending from the western part of the 
Government of Petrograd to the western border of Esthonia. In the 
eastern part of this belt the Wesenberg is said to overlie the Kegel ° 
proper, while in the western area the Wassalem intervenes between 
the Kegel and Wesenberg. I regret to say that I have not been able 
to trace these formations in the field as I should like to, but from what 
I have seen in the course of traverses in the neighborhood of Wesen- 
berg and Taps, and between Baltishport and Hapsal, and the débris 
on the northern end of the Island of Dago, I very much doubt whether 
these formations do outcrop as parallel belts. The distribution of 
the Kegel is given by Schmidt in detail, as follows: — The most 
easterly outcrop is at Poll (a short distance east of Wesenberg) where 
the Kegel is said to outcrop in the ravine and the Wesenberg on the 
bank above; then north of Wesenberg, at New Sommerhusen, west 
of Taps on the railroad between Kedder and Rasick, at Penningby, 
Nappel, Jelgimaggi (south of Reval) Friedrichshof, Kegel, Habbinem, 
and Kreuz. 
I did not see the locality at Poll, but visited the old quarry at New 
Sommerhusen, where the lithology and fossils are both typical of the 
Jewe, and not at all Kegel. The locality “north of Wesenberg”’ is 
probably an outcrop on the road to Haljal, and about three miles 
north of Wesenberg. Here, where the road mounts a slight terrace, 
is an exposure of nine feet of bluish and yellowish compact limestone 
containing many fossils, among which were Amphilichas holmi and 
the large Porambonites so common in the quarries at Wesenberg, and 
which are believed to be characteristic of that formation. If the 
strike here is approximately east and west, as it is supposed to be, 
and as it actually is in most places, then the strata at this locality 
must be but a short distance above the top of the Jewe, which out- 
crops at Aluver and New Sommerhusen at approximately the same 
level. Ina ditch at Welch, about five miles northwest of this out- 
crop, I obtained, through Herr von Dane, some specimens whose 
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