230 MINERALOGY. 



Dttnn, E. J. Notes on the occurrence of Enhydros, or "Water- 

 stones, at Beechworth. Trans. Epy. Soc. Victoria, vol. x. pp. 32- 

 35, with plan and sections. 



The enhydros consist of chalcedony, having a hardness equal to 

 that of topaz ; they are irregular polyhedra, and vary from a dark 

 brownish yellow to colourless ; some of the faces are striated, and 

 others pitted. They are generally hollow, and enclose a liquid with a 

 moveable bubble like that in a spirit-level. The shell is usually thin, 

 and either smooth on the inside, or studded with globules of chalcedony 

 or crystals of quartz. Mr. Dunn suggests that the great hardness of 

 the chalcedony may be due to the presence of a small proportion of 

 alumina, and the quartz may have crystallized in the interior after 

 the enclosed fluid had deposited its impurities. The enhydros occur 

 in granite and in Silurian sandstone at Spring Creek, near the town of 

 Beechworth. F. W. E. 



EcK, H. [Milarite]. K. Jahrb. Heft i. pp. 61, Q2. 

 Gives analysis of this species. 



. N. Jahrb. Heft vi. pp. 611, 612. 



Note on crystals enclosed in the biaxial mica of Pennsylvania. 



Eg GEE, A. J. Bipidolith aus dem Zillerthal. Min. Mitt. Heft iii. 

 p. 244. 

 'Analysis of Breithaupt's Onokite, a variety of Eipidolite, from the 

 Zillerthal. 



Egleston, T. Systems of Notation of Crystals. Proc. Lye. Nat. 

 Hist. N. York, ser. 2, no. 4, pp. 135, 136. 

 V Abstract. An account of the various systems in use. 



' On the striations of Crystals. Proc. Lye. Nat. Hist. N. 



York, ser. 2, no. 4, pp. 146, 147. 



Abstract. Nature and causes of the phenomenon discussed. The 

 principal cause "is what may be termed the ' oscillation ' between two 

 distinct crystalline forms." G. A. L. 



Eilees, a. a new occurrence of the Telluride of Gold and Silver. 



Trans. Amer. Inst. Min. Eng. vol. i. pp. 316-320. 

 TThe new locality is Bed-Cloud Mine, Gold- Hill District, Colorado. 

 The country-rock is granitic. Assays of ore are given. 



Eedmann, E. Zinkblende funnet i Skanes stenkolsforande forma- 

 tion. [Zincblende in the coal-bearing formation of Scania.] Geol. 

 foren. Stockholm Forhandl. bdt. ii. p. 48. 



Note of occurrence. 



EvEEWiJN, E. Looderts in het landschap Kandawangan "Wester- 

 afdeeling van Borneo. Jaarb. Mijn. Ned. O.-Ind. Jaarg. 3, Deel 1, 

 pp. 171, 172. 



Lead-ore occurs in quantity on a tributary to the river Kandawan- 

 gan, in "Western Borneo. A specimen yielded 81*02 per cent, of lead. 



