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TWENHOFEL: EXPEDITION TO THE BALTIC PROVINCES. oot 
to six inches thick) with thin shale partings. Few fossils appear to 
be present. The second quarry is situated on the side of a hill at an 
elevation of about fifteen feet above the shore quarry. The rocks 
consist of gray crystalline limestones interstratified with gray cal- 
careous shales. Only about three feet are shown. A single limestone 
bed near the base has the Caudigalli effect on its upper surface, and 
this same surface has many beautifully preserved Schuchertella pecten 
and Rhipidomella hybrida, of which a great many are single valves 
showing excellent interiors. Numerous fragments of Calymene 
spectabilis Angelin are also present. The other limestone beds contain 
many corals and crinoid stems like those of Moritz. 
About a mile farther eastward, at about the same elevation and’ 
presumably about the same horizon, is a large quarry which has 
recently been reopened. About five feet of strata are exposed, con- 
sisting of very fossiliferous gray crystalline limestones, and thin cal- 
careous gray shales. Some of the shale bands are filled with small 
Spirifers and Rhynchonellas, while the limestone beds are thickly 
crowded with large Crotallocrinus stems. The old dump heaps afford 
splendid collecting. Common fossils of the beds of this quarry are: — 
1. Clathrodictyon sp. 
2. Favosites gothlandicus. 
3. Spongophyllum contortiseptum Dybowski. 
4. Hallopora elegantula. 
5. Monticulipora fletcheri Milne Edwards and Haime. 
6. Ptilodictya lanceolata Hisinger. 
7 flexa Hisinger. 
8. Chonetes striatellus Dalman. 
9. Orthis canaliculata Lindstrém. 
10. Homeospira salteri (Davidson). 
11. Spirifer elevatus Hisinger. 
12. Tentaculites curvatus Boll. 
13. inaequalis Eichwald. 
14. Calymene spectabilis Angelin. 
The Nessoma quarries are just above sea-level, and cover several 
acres. The strata consist of thick-bedded black to dark gray mottled 
limestone with thin shale partings. Not more than five feet are ex- 
posed. Some of the beds of limestone are fully a foot thick, and 
afford excellent dimensional stone. The quarries are being actively 
developed, and at the time of my visit about a score of men were em- 
ployed, the stone being shipped to Riga, Pernau, Hapsal, Arensberg, 
