ADDENDA. 371 



of Dumont's Pliocene beds, they are separated under the distinctive 

 name of the Eem system (Eem-stelsel). They are characterized by the 

 occurrence of Cerithium lima and Venus rotundata. F. W. 11. 



Heale, Josh. Tin in Portugal. Min. Journ. March 28. 

 Notes on lodes in the province of Tras os Montes. 



Helland, Amtjnd. Om Kromjernstein i Serpentin (Chrome iron- 

 ore). Forhand. Yid. Selskb. (for 1873), page 151. 



The occurrence of chromite-bearing serpentines in the region be- 

 tween Koraas and Molde is described, and their origin attributed to 

 the decomposition and recomposition of diallage or of diallage- 

 bearing rocks. They occur among different stratified formations, both 

 as dykes and intercalated bands, and contain the chromite ("which is 

 peculiar to them) in patches, often grouped along planes coinciding 

 with neighbouring stratification. The frequent pseudomorphic asso- 

 ciation of serpentine with diallage, the fact that the latter often con- 

 tains traces of chrome-oxide, and certain chemical relations shown, 

 support the view taken. • H. M. 



Helmhackee, E. Der Antimon-Bergbau Milesov bei Krasna hora 

 in Bohmen. Jahrb. k.-k. Eergakad. Bd. xxii. p. 340. 



Hering, C. a. Die Hohenelber Kupfererzlagerstatten. [The copper- 

 ore deposits of the Upper Elbe]. 



HiTcncocz, Prof. C. H. The Coal-measures of the United States. 



Iron, vol. iv. p. 426. 

 A summary of the superficial extent and vertical thickness of the 

 Carboniferous Coal-measures of the United States. 



and J. H. Huntingdon. The Geology of New Hampshire. A 



Report comprising the results of Explorations ordered by the 



Legislature. — Part I. Physical Geography. Pp. 688. 8vo. 



Concord. 



Gives a history of the Geological Surveys of the State, and other 



geological information. (From notice in Amer. Journ. ser. 3, vol. ix. 



p. 222.) 



Honetman, Dr. D. Geology of Nova Scotia. Trans. Nov. Scot. 

 Inst. vol. iii. part 4, p. 345. 



Hume, W. C. Report on the Queensland Tin Fields. Pp. 31. 8vo. 

 With geological information and particulars of rocks, &c. 



Hunt, John. Mount Bischoff Tin Mines, Tasmania. Min. Journ. 



Feb. 21. 

 No true tin-lode has been found. There is an antimony-lode in 

 slate, near the granite. 



Hunt, R. Mineral Statistics of the United Kingdom of Great Britain 

 and Ireland for the year 1873. With an Appendix. 8vo. Lond, 

 Pp. xviii, 278. 



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