.350 ADDENDA. 



^n France a la Fabrication tie I'Acide sulfuriqiio. [Pyrites used 



ill France for Manufacture of Sulphuric Acid.] Ann. Chim. Fhys. 



ser. 5, t. vii. pp. 229-2G-4: ; 5 woodcuts. 



Describes the various deposits of pyrites worked in France, and 



gives many analyses. Contains notes on and analyses of foreign 



pyrites imported into France. Gives statistics. F. W. E. 



Hall, Prof. James. Map Illustrating the Paper on the Kelations 

 of the Niagara and Lower H«lderberg Groups and their Geographical 

 Distribution. 2Sth Ann. Hep. New York State Mas. The paper 

 is noticed in Geological IIecord for 1874, p. 117, from Froc. 

 Amer. Assoc, for 1873. Published also in 1875 in 27th Ann. Rep. 

 New York State Mus. Nat. Hist. pp. 117-131. 



, -— :; — . Report of the Director. 2^tli Ann. Rep. New York State 

 Mus. pp. 5-16. 

 Remarks, pp. 13-15, on the Chemung and Catskill Groups in New 

 York State. 



Hankel, W. Ueber die thermoelektrischen Eigenschaften des 

 Kalkspathes, des Berylles, des Idocrases (Yesuvianes) und des 

 Apophyllites. [Thermo-electric Properties of Calcite, Beryl, 

 Idocrase or Yesuvian, and Apophyllite.] A7in. Phys. Chem. 6 

 Eeihe, Bd. vii. pp. 156-164. 



Haughton, Rev. Samuel. Remarks on the " Principle of Least 

 Paste" as regulating the Crystallization of Fused Rocks. Min. 

 Mag. no. 2, pp. 46, 47. 



H«ddle, Prof. M. P. Address on " The How and Where to collect 

 Minerals in Scotland." Min. Mag. no. 2, pp. 29-40. 



Hermann, R. Untersuchungen iiber die Zusammensetzung von 



Shepard's Hermannolith. [Composition of Hermannolite.] Journ. 



prcbkt. Chem. F. 2, Bd. xiii. pp. 386-395. See Geological Record 



for 1875, p. 390. 



An examination of the new mineral Hermannolite, Shepard, leads 



to the formula 2(2R0 . 3NbOJ + R0 . Me,0,, where RO=(MnO, . FeO) 



and Me,05=(iTa,05 .fliPg)". It therefore differs from Columbite, of 



which it was formerly considered to be a variety, and from all other 



known minerals of the Ta group. Loc. Haddam, Connecticut ; crys. 



pyramidal ; colour black ; streak black-brown ; sp. gr. 5*32. F. W. R. 



Jolly, W. The Scientific Materials of the North, and our Scientific 

 Work. The Inaugural Address delivered before the Inverness 

 Scientific Society and Field Club. Pp. 27. 8vo. Inverness. 



Geology of the district, pp. 6-9 ; Physical Geography, p. 12, 



Klien, Dr. Paul. Beitrage zur Kenntniss des Gypses. [Contributions 

 to a Knowledge of Gypsum.] Ann. Phys. Chem. 6 Reihe, Bd. vii. 

 pp. 611-621. 



Laapeyres, H. Der Lithion-Psilomelan von Salm-Chatoau in Belgian 



