Ixxii PROCEEDINGS OF THE GEOLOGICAL SOCIEXY. 



Amongst tlie numerous sections given in this work is one on 

 the Deister, which shows the conformable position of all the beds 

 from the Brown Jura up to the Hilsthon or Hils clay, in the fol- 

 lowing order : — Lias, Brown Jura, Lower Oxford group. Dolo- 

 mite, Oolitic limestone, Kimmeridge group, Flaggy limestone, 

 Marls, Serpulit, Wealden sandstone, Wealden clay, and Hils clay. 

 The Wealden sandstone is from 540-550 feet thick, and consists 

 of alternating beds of argillaceous marly shale, coal, and sand- 

 stone of a yellowish colour and fine grain, constituting the prin- 

 cipal mass- of the whole series. Three workable beds of coal, 

 from one to two feet in thickness, are met with in this forma- 

 tion, but the coal-beds near Osterwalde are stated to have a 

 much greater thickness. The order of stratification of these 

 formations and of their geological grouping in North-Western Grer- 

 many is given in a tabular form ; another Table shows a general 

 view of the vertical distribution of the principal fossils in the 

 Upper Jura and "Wealden formations. A separate Appendix gives 

 some interesting palaeontological information respecting Nerincea 

 and CTiemnitzia, as well as several new or little-known species 

 of the genera Trigonia, Cyprina, Corhis, and Greslya. The Neri- 

 noBcB are subdivided into groups according to their having one, two, 

 three, four, or five plaits. 



The Cavaliere Capellini has published a geological account of 

 the neighbourhood of the Grulf of Spezzia, and of the lower valley 

 of the Magra, for the purpose of illustrating the Gleological Map 

 of that district, which he had published in 1863. In this work 

 he gives us some interesting details respecting the progress of 

 the G-eological Map of the Kingdom of Italy. This progress is 

 not so satisfactory as could be desired. In July 1861 a Com- 

 mission had been appointed to meet at Florence to discuss the 

 method of, and to lay down the rules for, the construction of this 

 map. A report on the projected plan was sent in to the Go- 

 vernment in the following September; it was talked about for 

 a few months, and suggestions for carrying it out were discussed, 

 but, as with so many other projects, it was gradually lost sight of, 

 and nothing more was heard either of geologists or of a geolo- 

 gical map. 



Under these circumstances, Capellini determined to publish at 

 his own expense this sheet, which was then nearly finished, and at 

 which, he had been working for many years, with the intention of 

 following it up with maps of other regions, constructed on the 

 same plan. Encouraged by tlie success which has attended his 

 attempt, he informs us that, besides the Map of the Province of 

 Pisa by Prof. Savi, other maps are being undertaken for other pro- 

 vinces in Tuscany and the E-omagna, and that he himself has been 

 working for two years in the Bolognese district. 



The Gulf of Spezzia lies between two parallel ridges of moun- 

 tains, which form its eastern and western shores. The oldest rocks 

 here described occur near Lerici and Cape Corvo at the southern 

 point of the eastern chain. They consist of arenaceous and chlo- 



