96 GEOLOGY. 



Sjogrtjn, a. Om u^ra forsteningar i Olands kambriska lager. 

 [Fossils from the Cambrian beds of Gland.] Geol. foren. Stock- 

 holm Forhandl. bdt. i. pp. 67-80, pi. v. 



The literature of the subject is given. * The beds from which the 

 fossils have been obtained are described; they consist of sandstone, 

 shaly sandstone, and gypsiferous clay-slates. The fossils are enu- 

 merated, and, to some extent, described ; they are : — 6 species of Para- 

 doocides, of which four are undetermined, one . of the others being P. 

 Oelandicus, n. sp. (fig. 1); Ellipsocvjphalus, si^. in^et. ; Agnostus regius, 

 n. sp. (fig. 6), A. sp. indet. ; and two undetermined species of Theca. 

 Comparing the series with the Cambrian of other countries, the author 

 refers the sandstone to "■ Etage Azoique B " of Barrande and to the Long- 

 mynd of Britain, the shaly sandstone and clay-slates together to the 

 *' Faune primordiale" and to the Menevian, while the alum-shales with 

 Oleni represent the Saknas of Bohemia and the Lingula-flags of Eng- 

 land. g.a:l. 



Exempel pa gangformigt upptradande halleflinta. [Instance 



of Halleflinta occurring as a dyke.] Geol. foren. Stockholm For- 

 handl. bdt. i. pp. 86-88, 1 fig. in text. 

 Note of a mass of compact halleflinta cutting off" some nearly 

 vertical beds of banded limestone at the South Silfberg mine in Dan- 

 nemora. G. A. L.- 



o 

 Anteckningar frEn en resa i Angermanland och Jemtland 



sommaren 1871. [Journey in Angermanland and Jemtland.] 

 Geol. foren. Stockholm Forhandl. bdt. i. pp. 115-118. 

 Notes, chiefly on the sequence of the beds of the Tasjo mountains. 



. En geologisk profil inom norra delen af Svartelfvens floddal, 



[Geological section in the northern part of the Svartelfven valley.] 



Geol. foren. Stockholm Forhandl. bdt. i. pp. 147-151, pi. xiv. 



The section shows felsitic conglomerates, sandstone, coarse grit, and 



greenstone interbedded with felstones, all having a high dip to the 



S.W. G. A. L. 



■ Om sambandet mellan det satt, hvarpa vara maimer upptrada, 



och den relativa aldern hos de bergarter, hvaruti malmerna fore- 

 komma. [The- connexion between the manner in which ores ap- 

 pear and the relative ages of the rocks in which they are found.] 

 Geol. foren. Stockholm Forhandl. bdt. ii. pp. 2-13. 

 It is now generally accepted that the ores of Sweden form beds or 

 ellipsoidal masses (lager stockar), and cannot be classed as veins. The' 

 author arranges the Swedish iron-ores under the following heads — 

 Quartzose and felspathic ores, pyroxenic and hornblendic ores, manga- 

 nesian and calcareous ores. 



The ores of the first group are characterized by their striated ap- 

 pearance, by the percentage of quartz and felspar, by the presence of 

 phosphorus in a greater or less degree (possibly owing to the felspar), 

 by a total absence of minerals belonging to the augite or hornblende 



