— 161 — 



(with 3 plates). — S. F. Fitzgerald: Note on the conductivity of Tourmaline 

 crystals. 



Part VI. July 1880. 

 V. Ball: On the evidence in favour of the belief in the existence of 

 rloating ice in India during the deposition of the Talchir (Permian or 

 Permio-Triassic) rocks; — On the coal fields and coal production of India 

 (with a map); — On the mode of occurrence and distribution of gold in 

 India. 



14) Scientific Transactions of the Royal Dublin Soc. Vol. I 

 (new series). Dublin 1878. 



E. Hüll: On the nature and origiu of the beds of chert in the Upper 

 Carboniferous Limestone of Ireland. With 1 plate. 4 °. — E. T. Hardman : 

 On the chemical composition of chert and the chemistry of the process 

 by which it is formed. — E. Hcll : On the relations of the Carboniferous, 

 Devonian and Upper Silurian rocks of the South of Ireland to those of 

 North Devon. (With 2 plates and woodcuts.) 



15) Transactions of the Royal Irish Academy. Vol. XXVI. 

 1879. 4°. 



Jos. P. O'Reilly: Explanatory notes and discussion of the nature of 

 the prismatic forms of a group of columnar basalts, Giant's causeway. 

 UVith 4 plates.) 



16) The American Journal of Science and Arts. Third Series. 

 [Jb. 1880. Ii. 420.] 



Vol. XX. Nö. 116. August 1880. 

 J. M. Stillmax: Bernardinite, its nature and origin. 93. — *G. J. Brush 

 and E. S. Dana : Cristallized Danburite from Russell, St. Lawrence County, 

 N. Y. 111. — J. F. Whiteaves: New species of Pterichthys, allied to 

 Bothriolepis ornata. 132. — J. L. Smith: New meteoric mineral (Peckhamite) 

 and some additional facts in connection with the fall of meteorites in Jowa. 

 May 10, 1879. 136. 



Vol. XX. No. 117. September 1880. 

 C. H. Koyl: Colours of thin blowpipe deposits. 187. — James D. Dana: 

 Geological relations of the limestone belts of Westchester County , N. Y. 

 194. — C. D. Wallcott: Permian and other paleozoic groups of the 

 Kanab Valley, Arizona. 221. — 0. C. Marsh: Notice of jurassic mammals 

 representing two new Orders. 235. 



Vol. XX. No. 118. October 1880. 

 *G. J. Brush and E. S. Dana: Mineral locality at Branchville, 

 Connecticut: 4th paper. Spodumene and the results of its alteration. 257. 

 — A. Aggasiz: Paleontological and embryological development. 294. — 

 W. E. Hidden: Meteoric iron from North Carolina. 324. 



X. Jahrbuch f. Mineralogie etc. 1880. Bd. I. 1 



