-Dr. 0. Herrmann — Distribution of Graptolites. 409 



imraediate knowledge of the position of any given locality :— they 

 are, in Schonen (Skane) : — Eostanga, Tosterup, Jerrestad, Fogelsang, 

 Nyhanin, Kiviks-Esperod, Flagabro, Komstad ; in Dalecarlia 

 (Dalarne) : — Nitsjo, Stygfossen, Kallholm, Gullerasen, Osmundsberg, 

 Enan, Skattungbyn ; in East Grothland : — the Hunneberg and 

 Klubbndden near Motala ; in West Gothland: — Kongslena ; and in. 

 Gotland : — Visby, Faron, and the district of Frojel. 



The Swedish Graptolites have been very thoroughly worked out. 

 M. von Bromel, the first observer of these peculiar organisms, Linne, 

 who gave them their present name, Nilsson, Hisinger, L. Tornquist, 

 and especially G. Linnarsson and S. A. Tullberg, have contributed to 

 this accurate knowledge of the Swedish Graptolites. S. A. Tullberg 

 has done this above all by his work " Skanes Graptoliter, I.," in 

 which, following the example of the English paleontologist, 

 Lapworth, he has, with the aid of the Graptolites, endeavoured to 

 carry out a special division of the Swedish Silurian. 



In Norivay the productive fossil localities in the vicinity of Chris- 

 tiania also furnished Graptolites at an early date. In the capital of 

 the district itself, or in its immediate neighbourhood, localities occur 

 upon the Galgenberg, in the Nordal Bruns-Strasse, and at the 

 churchyard " Vor-Frelser," near the Botanic Garden (Toien), in 

 which well-preserved Graptolites may easily be collected. At a 

 somewhat greater distance fi'om Christiania are the localities Yakkerd, 

 Malmd, Asker and Eoken ; and still further off we find Krekling in 

 the parish of Eker, and the district of Ringerike with several points, 

 such as Slemstad, Fure, etc. 



During an excursion last summer (1884) another locality was dis- 

 covered in Eingerike, in which thick graptolitiferous aluminous 

 schists (^Phyllograptus-schists of the Silurian Etage 3, and Dictyo- 

 graptus- schists of Etage 2), may be well studied, although the state 

 of preservation of the fossils themselves is by no means satisfactory. 

 This point is situated above the farmstead of Val, opposite the 

 Vikersund railway station. 



In the last few years, indeed, the number of the Norwegian 

 graptolitiferous rocks has been repeatedly increased. In the first 

 place, H. Eeusch has detected among the fossils from the peculiar, 

 strongly-metamorphosed mica-schists of the peninsula of Bergen, 

 Graptolites which indicate an Upper Silurian age for the beds in 

 question. The locality for these Graptolites, which, however, are 

 much deformed, is near the farmstead of Vagtdal. 



I have myself also discovered Graptolites, in the summer of 1883, 

 in the bluish-grey, pyritous clay-slates, which stretch from Hovind 

 in the district of Drontheim to the Selbo lake, and, with their 

 reddish-brown weathered surface, are conspicuous as a thick band in 

 the mountains. These clay-slates, like most of the sedimentary 

 rocks of the Drontheim district, are strongly metamorphosed, and, in 

 consequence, the Graptolites, as may be supposed, are preserved in 

 a very unsatisfactory state. The species which I could determine 

 (Dicranograptus ramosus, Tiall, Diplograptus teretiusculusl His.) in- 

 dicate for the slates a horizon corresponding to the English "Upper 

 Llandeilo " or "Lower Caradoc." 



