102 



GEOLOGY. 



limestone with ffemicidaris crenularis. 8. Lower marl without fossils. 

 9. Zone of Ammonites hlspidus. 10. Zone of Am. Baheamus and Am. 

 arolicus. 11. Zone of ^m. Martelli and Am. jpolyplocus. From 1 to 8 

 belong to the Corallian, the rest to the upper part of the Oxfordian. 



G. A. L. 

 ToMBECK, — . !N"ote sur une excursion geologique faite au travers 

 des terrains Coralliens et Oxfordiens de la Haute-Marne. [Excur- 

 sion through the Corallian and the Oxfordian of the Haute-Marne.] 

 Bull. See. Geol. France, 3 ser. t. ii. pp. 251-255. 

 The following table gives the views of the author as to the lower 

 divisions of the Coralline Oolite in the valleys of the Aube, the Marne, 

 and the Rognon : — 



Oxfordian. 



G. A. L. 



ToRDEFX, — . Gres a Num. Icevigata, a Glageon. [Num.-lcevigata 



grit at Glageon.] Ann. Soc. Geol. Nord, 1870-74, p. 41. 

 Note of occurrence. 



ToRNEBOHM, A. E. Nagra geognostiska iakttagelser i trakten af 

 Mjosen. [Geological observations in the Mjosen district.] Geol. 

 foren. Stockholm Forhandl. bdt. i. pp. 9-14, pi. i. 

 - The divisions recognized are the following: — 1. Lower Silurian 

 sandstones and shales, and alum-shales with swinestone. 2. Green 

 schists with Faradoxides Kjerulfii, and quartzite and conglomerate. 

 3. Sandy limestone, and schists with calcareous bands. 4. Dark clay- 

 slate, sometimes taking the form of alum-shales. 5. Gneiss. Five 

 longitudinal sections are given. G. A. L. 



. Om forekomsten af serpentin i Jemtland. [Serpentine in 



Jemtland.} Geol. foren. Stockholm Forhandl. bdt. i. pp. 29, 30. 

 Kote of occurrence. 



. Nigra anteckningar om Sveriges urterritorium. [Primitive 



rocks of Sweden.] Geol. foren. Stockholm Forhandl. bdt. i. 



pp. 175-187, 194-201, pi. xvii. A German version in N. Jahrb. 



Heft 2, pp. 131-146, with plate. 



Classes the schistose rocks of Sweden under the following heads : — 



Jerngneis (Iron-gneiss), containing neither limestone nor ores. Gra 



gneis (grey gneiss), containing limestone, but only in its upper parts. 



Rod gneis (lied gneiss), containing both limestone and ores. Eurit 



with Oligoclase-gneiss, containing thick layers of limestone and ores, 



principally in the lower parts of the division. Lersldffer (Clay-slate) 



