TWEXHOFEL: EXPEDITION' TO THE BALTIC PROVIXCES. 325 



about the same horizon of the marl beds at St. Johannis. At that 

 place the rock is said to be quite dolomitic. The exposure is no 

 longer in existence. Fossils which have l^een collected there are: — 



1 . Eospirifer radiatus. 



2. Leptaena rhomboidalis. 



3. Meristina tumida (Dalman). 



4. Platystrophia biforata lynx. 



5. Spirifer crispus Dalman. 



6. Orthoceras canaliculatum. 



7. Calymene tuberculata Brunn. 

 S. Encrinurus punctatus. 



9. Oncholichas cf. gothlandicus Angelin. 



10. ornatus Angelin. 



11. Proetus concinnus osiliensis Schmidt. 



At Leal, on the western end of the mainland, the once extensive 

 quarries are now to a considerable extent overgrown. The rock is a 

 fine-grained dolomite which becomes yellowish white on exposure. 

 Originally there may have been twenty feet exposed, but at present 

 not more than one third of this is shown. Few fossils appear to be 

 present. 



At Kuiwast on the eastern side of the Island of Moon, a brownish 

 gray to yellowish white, fine-grained crystalline dolomite outcrops on 

 the beach. At most levels it has a gnarled structure and appears to 

 be largely composed of coralline material, although the fossils have 

 been completely destroyed. In a few places the bedding is regular. 



A similar rock, but with bedding in some places well defined, out- 

 crops at many localities on Moon. At the base of Igo Pank and 

 Pussininna Pank occur soft, bluish gray and yellow, not well or finely 

 crystallized dolomites \\'ith well-defined bedding. The overling 

 rocks are cavernous dolomites which, being more resistant to wave- 

 erosion than the softer underlying strata, overliang the latter in many 

 places, producing a wild and picturesque coast. Fossils are quite 

 rare in the rocks at the top of the cliffs, but in the softer beds beneath 

 they are more common. The former beds are probably the same as 

 those of Kuiwast, and they appear to compose most of the surface 

 strata of the northern interior of iSIoon. 



Fossils from the basal beds of the two Panks mentioned are: — 



1. Hindia fibrosa Roemer. 



2. Halysites catenularia. 



