EUROPE. 103 



** stone-work " and what " earth- work " in tunnelling. The geological 

 data are given. G. A. L. 



Peters, K. P. Die Donau und ijir Gebiet. [The Danube and the 

 Danube Country.] Bd. ix. of the Internationale ivissemcliaftliche 

 Bihliotek. Pp. 375. Leipzig. 



Gives a geological sketch of the region. 



Pettersen, Earl. Serpentin- og Olivinstens-forekomsten i det nord- 



lige Js^orge. [Occurrence of Serpentine and Olivine-rock in N, 



Norway.] Geol. Foren. Stockholm Fiorhandl. Bd. iii. pp. 62-71, 



plate. See also N. Jahrb. p. 613. 



The occurrence and position of the two rocks are described, and the 



probability of the serpentine being a secondary product derived from 



olivine- rock, which latter is proved to be itself metamorphic in several 



localities, is discussed. E. E. 



. Olivinstensforekomsten i det nordlige Norge. [Occurrence 



of Olivine-rock in Norway.] Geol. Foren. Stockholm Fbrh. Bd. iii. 

 pp. 198-205, plate (plan and sections). 



Gives an account of the locality and mode of occurrence. Describes 

 the mineralogical composition of the rock and its associated minerals. 



. Saltens Geologie. [Geology of Salten.] Arcli. Math.Naturvid. 



Bd. i. pp. 211-228, plate of sections. (Pp. 221-238 reprinted 



with considerable alterations at end of vol., to be substituted for 



those pages as first issued.) 



The rocks of the region of the Saltenfjord in N. Norway are : — 



Laurentian gneiss (gi'undfjeldets gneis) ; the Tromsoe mica-schists 



(Huronian) ; the Balsfjord slate series, comprising limestone and 



schistose quartzites (Taconic) ; and the Kjolen granite (gneiss-granite 



and granite proper). G. A. L. 



. Bidrag til det nordlige Norges Orografi. [Orography of 



N. Norway.] Arch. Math. Naturvid. Bd. i. pp. 367-437, con- 

 toured map and plate of sections. 

 The sections are the same as some of those in the foregoing paper. 

 The geology of the country is described. 



Risehulen ved Lavangsbotten. [Caves near Lavangsbotten.] 



Arch. Math. Naturvid. Bd. i. pp. 456-460 (by a printer's error the 

 paging is given as 556-560), plate. 

 Gives a description, with plan and sections, of this branching cavern, 

 460 feet long, 6 to 12 broad, and 5 to 6 high. 



PfafF, Prof. P. Mt. Blanc-Studicn. Ein Beitrag zur mechanischen 

 Geologie dor Alpen. [Geology of Mt. Blanc, &c.] Zeitsch. deutsch, 

 geol. Oes. Bd. xxviii. pp. 1-21 ; 8 woodcuts. 



Doubting the mechanical explanation of the fan-structure, observa- 

 tions on the inclination of the Secondary limestones and shales were 



