APPENDIX I. 459 



light and dark marl schists, which are sometimes sandy, while in 

 its upper part appear pure quartz-sandstone beds and argillaceous 

 sandstone. The collective thickness of these strata is about 1000 feet 

 in Gaasefjord, while in Hell Gate it is possibly somewhat greater. No 

 fossils were found in this series. 



At the base of the high cliffs at Indre Eide and Borgen appears 

 Series 0. In both of these places it is overlain by a dark limestone 

 and black shale, partially fossiliferous. This dark limestone and shale 

 are the lowest layers in a series of strata at least 1500 feet in thickness, 

 Series D, which appears in the profiles on both sides of Gaasefjord, 

 from Borgen to the foot of Vargtoppen (Wolf Top), and from Indre 

 Eide to Skrabdalen. 



In Series D a occurs Atrypa reticulans in great quantities, but 

 little else. On the other hand, there are preliminarily determined in 

 D b about fifty-five species, of which may be mentioned : Favosites 

 sp. div., Columnaria sp., Cyathophyllum sp. cfr. hexagonum, Recepta- 

 culites sp., Fenestclla sp., Homalonotus sp., Burmeisteria sp., Declienella 

 sp., Prmtus sp., Bronteus sp., Orthis striatula, Leptccna sp., Strophomma, 

 titreptorhynchm, Atrypa reticularis, aspera ; RhynchoneHa (Piujnax) cfr. 

 reniformis, pugnus, Productm cfr. pmlongus, Spirifer of the Venieulli, 

 Murch. type, a peculiar Pentameride, Terebratula cfr. Dielasma, 

 Pterinea sp., Modiolopsis sp., Lucina sp. div., Bcllerophon sp., Platyceras 

 sp., Orthoceras sp., Gomphoceras, gigantic nautilus and ganoid scales. 



The fauna in D c is merely a repetition, and, in the case of certain 

 species, a further development of the forms found in D If. It will 

 thus be seen that there is a spring in regard to the fauna between the 

 upper layers in Series B and the lower ones in Series D, which more 

 particularly resemble Lower or Middle Devonian.* The concordantly 

 embedded (?) Series C might therefore be thought to represent upper- 

 most Silurian as well as lowest Devonian. 



Divisions D d and D / are poor in fossils, and are partly shale 

 divisions. In the impure limestone in D rj occur again numerous 

 fossils, among which are Alrypa relicularis, Rhynchonella cfr. cuboides, 

 Spirifer cfr. undifera, Product us sp., Terebratida cfr. Dielasma, Pterinea 

 sp., Avicula sp., Modiolopsis sp., Pleurotomaria sp., Prmtus sp. Traces 

 of placoderin fish are also met with. Above these strata are beds 

 of purer limestone, D h, and above these again some less pure, D *'. 

 The uppermost strata of D / alternate with strata of light-grey quartz- 

 sandstone, terminating with a clay -sandstone, which in places is i ichly 

 fossiliferous, though the fossils are in a bad state of preservation. 



* Indeed, since writing the above Mr. Ch. Schuchcrt, Natural History Museum, 

 "Washington, tells me in a letter that, judging from the above faunal list, he thinks 

 they may be Middle Devonian," or even low Upper Devonian. 



