iONBRALOGr 261 



Swallow', Ellen H. Analysis of Samarskite from a new locality. 



Froc. Boston Nat^ Hist, Sac. vol. x.vii. pp. 424-428. 

 Analysis given. Specimen from North Carolina. 



Notes on the Chemical Composition of some of the Mineral 



Species accompanying the Lead Ore of Newbiiryport. Froc. Boston 

 Nat. Hist. Soc. vol. xvii. pp. 462-465. 

 3 analyses given. 



Szabo, Prof. J. Enargit njabb elojovere Paraden. [A new Occur- 

 rence of Enargite in Parad.] Foldtaul Korlony V. K. (6, 7, 52). 



In the trachytic formation of the Matra mountains, in Central 

 Hungary, the enargite has been known since 1863 ; it is now found in 

 other mines, and with different characters. The latter is reddish, like 

 the famatinite of the Argentine republic. It contains so much free 

 gold in microscopic globules, that this is more valuable than the cop- 

 per. There is also a small percentage of cobalt and nickel. J. S. 



Tanner, Dr. J, A. Analysis of crj-stallized Ammonium Oxalate 

 from Guanapi Guano. Chem. News^ vol. xxxii. p. 162. 



Analysis of a crystalline substance found in the guano showed that 

 it was a normal hydrated oxalate of ammonium. The name Oxammite 

 has been given by Shepard to a supposed new species having a similar 

 composition. P. W. K. 



Tennant, Prof. J. Notes on Diamonds from the Cape of Good Hope. 



Geol. Mag. dec. 2, vol. ii. pp. 545-547 ; and Jouni. Soc. Arts, 



vol. xxiii. no. 1193, p. 930. 

 Notes of the history of the discover)^, of the mode of cutting, value, &o. 



Terrell, A. Traite pratique des essais an chalumeau. [Practical 

 Treatise on Blowpipe-analysis.] Fains. 



Thomas, J. W. On the Gases enclosed in Coals from the South Wales 

 Basin, and the Gases evolved by Blowers and by boring into the 

 Coal itself. Journ. Chem. Soc. pp. 793-822. 



Tichborne, Charles R. C. On the presence and distribution of 

 Pluorine in Calc- spars. Journ. 2i. Geol. Soc. Ireland y ser. 2, vol. iv. 

 part ii. pp. 82, 83. 

 The author, finding that fluorine is an invariable ingredient of the 

 calcium calculi, examined minerals for it, and has found it in 5 speci- 

 mens of calc-spar from diiferent localities. Ho considers the small 

 quantity found in such cases to be '' entrapped." E. T. H. 



Note on the presence of Thallium in an Iron-Ore from 



Prussia. Journ. B. Qeol. Soc. Ireland, ser. 2, vol. iv. pt. ii. pp. 



84, 85. 



The ore is a mechanical mixture of blende and iron-pyrites. Details 



of the process adopted for the detection of thallium are giv^en, with 



analysis of the mineral. E. T. H. 



