ADDENDA. 389 



following characteristic species of the Headon series — Paludina lenta^ 

 Planorhis euomj>halus, and Unio Solandri. F, W. R. 



Gourdon, Dr. Excursion dans la vallee de TAriege et dans le canton 



de Querigiit. Bull. Soc. Hist. Mat. Toulouse., t. ix. pp. 285-305. 

 A botanical excursion, with a few geological notes. 



Gregory, A. C. First Report of the Geological Surveyor, being on 

 the Geology of Part of the Districts of Wide Bay and Burnett. 

 Pp. 6. Fol. Brisbane. [See above, p. 152.] 



Grewingk, Prof. C. [The Donetz Coal-district.] Sitz. nat. Ges. 

 Dorpat^ Bd. iii. p. 452. 



. [Geology of Dorpat.] Ibid. pp. 470-474. 



Granite, Silurian, Devonian, Carboniferous, Permian, Jurassic, Cre- 

 taceous, Miocene, Quaternary, and Alluvium are referred to. 



. [Mammals from Drift, Livonia,] Sitz. nat. Ges. Dorpat^ 



Bd. iii. pp. 475-477. 



. [Erratic Block near Dorpat.] Ibid. pp. 479-481. 



. [Association of Man and Mammoth in the Ural.] Ibid. 



Appendix, pp. xxviii-xxx. 



Gumaelius, Otto. Om jernmalmslagret vid Naeverhougen i Xorge. 

 [Iron-ore Deposit of Nseverhougen, Norway.] Geol. Foren. Stock- 

 holm Forhaadl. Bd. ii. no. 28, pp. 565-572 ; Geological Map and 

 plate of Sections, tfec. 

 The chief mass of the ore lies in euritic rock, closely following the 

 strike of an overlying limestone. Elsewhere the ore is in the limestone 

 itself. G. A. L. 



Gnyerdet, A. Etude Microscopique de Roches Eruptives. Compt. 



Rend. Assoc. Franc. 3 Sess. pp. 391-401. 

 Describes French, German, Swiss, Italian, Swedish, English, Scotch, 

 Hungarian, Belgian, Tyrolean, and Mexican rocks. 



Hahn, 0. H. A Campaign in Railroad District, Nevada. Trans. 

 Amer. Inst. Min. Eng. vol. iii. pp. 329-332. 



Comprises a description of the lead-ores of the district, which occur 

 in lenticular masses along and near the contact of crystalline limestone 

 with a dioritic porphyry, and consist of argentiferous carbonate of lead 

 and galena, the latter occurring in solid blocks or in ribbons running- 

 through the limestone. Associated with these are silicate, carbonate, 

 and suboxide of copper, brown spar and calc-spar. R. B. N. 



Harting, P. Bijdrage tot de Kennis der geologische Gesteldheid 

 van den Bodem onder Utrecht en van het Eemdale. [Geology of 

 Utrecht and the Eem Vallev.^ Versl. Med. Kon. Ale. Wet. 2 rks. 

 dl. 9, pp. 42-50. 



