1 87 1.] Technology. 409 



alumina, potash, ferric oxide, &c., and occurs at Nordhaben, near Steben, 

 in Upper Franconia. The mineral forms thin shortly-fibrous layers on clay- 

 slate and on iron pyrites, and presents a greenish-white colour, coupled with a 

 pearly lustre. 



The well-known locality, Luneburg, in Hanover, has given its name to a 

 new species termed Lilnebiirgitc. It is a boro-phosphate of magnesia, probably 

 deposited from the mother-liquor of sea- water. 



Under the name of metacinuabarite, a native amorphous sulphide of mer- 

 cury has been described by Mr. G. E. Moore. The mineral was found by 

 Professor Whitney in Lake Co., California, and contains — sulphur, 13*82; 

 mercury, 85-79. 



According to the Abbe Moigno, a valuable deposit of native phosphate of 

 lime has been discovered near St. Petersburg. The layer occurs at a depth of 

 about i-8 metre below the surface, and was brought to light during some recent 

 excavations for drainage. 



Von Kobell has detected thallium in the zinc-blende, or sphalerite, of Gerold- 

 seck and Herbesthal ; whilst the blende of many other localities was examined 

 for this element with only negative results. 



It is so long since Dr. Schrauf issued the first part of his fine " Atlas of 

 Crystal-Forms," that we had almost ceased to expect a continuation of this 

 valuable work. It appears, however, that the delay has arisen from causes 

 which neither author nor publisher could control, and we may now hope that 

 the succeeding parts will follow in rapid succession. The second instalment 

 just issued* contains clear drawings of crystals of anglesite, anhydrite, anor- 

 thite, antimony, antimonite, apatite, and aphanesite. It may be well to note 

 that this last name is applied to the arseniate of copper, so well known as 

 clinoclase — a name which, in spite of its priority, has been transferred from 

 this species, and applied to some of the felspars — clinoclase being of course 

 the proper correlative of orthoclase and plagioclase. 



Many attempts have from time to time been made to represent mineral 

 specimens by plates painted in natural colours, but such attempts have rarely 

 been successful. A second edition of Weber's work " On the Minerals of 

 Bavaria," has now appeared under a new title,! and contains 64 plates of 

 minerals tinted after nature. The present edition has been prepared with the 

 assistance of Dr. Haushofer. 



A work on the mineralogy of volcanoes, by Dr. Landgrebe,^ gives in alpha- 

 betical order descriptions of all minerals found in rocks of volcanic origin, 

 whether these minerals are original constituents of the rocks or merely subse- 

 quent products. Its especial value lies in notices of minerals occurring in the 

 two Hesses and the adjacent countries, where the author has done original 

 work. For example, he has discovered graphite in the columnar basalt of the 

 Lammsberg. 



Naumann's " Elements of Mineralogy" has now reached an eighth edition. § 

 It is only two years since the last edition was issued, but the form of the work 

 has since been much improved, and formulas are now given on the modern 

 atomic weights. 



TECHNOLOGY. 



The first report of the Royal Commission on Scientific Instruction and the 

 Advancement of Science has just been published. From it we make the fol- 

 lowing abstract: — The commissioners consider that there is no necessary con- 



* Atlas der Krystall-Formen des Mineralreiches. Zweite Lieferung. Tf. xi. — xx. Wien, 

 1871. 



•f Die Mineralien in 64 coloriten Abbildungen nach der Natur, von J. C.Weber. Zweite 

 Auflage: verbessert und vermehrt unter Mitwurkung von Dr. K. Haushofer. 8vo. Miinchen. 

 Pp. 99. 



t Mineralogie der Vulcane, von G. Landgrebe. 8vo. Cassel und Leipzig. Pp. 396. 



§ Element der Mineralogie, von C. Naumann. Achte vermehrte und verbesserte Auflage. 

 Mit 836 figuren. 8vo. Leipzig. Pp. 606. 



VOL. VIII. (O.S.) — VOL. I. (N.S.) 3 G 



