6 io General Notes. [July, 



Nezv locality ; >r M>: //<?//■ Cork. — T. D. Rand finds this mineral 

 near Radnor, Pa. 



New locality for Aquacreptite. — G. H. Parker finds aquacreptite 

 in decomposed gneiss in West Philadelphia. 



Note on Aquacreptite. — H. C. Lewis remarks that at each of the 

 localities for aquacreptite the rock differs ; at West Chester it is 

 serpentine, at Marble Hall limestone, and at Philadelphia gneiss. 

 Experiments are described which he had made to discover the 

 cause of decrepitation, which he finds due to capillary attraction. 

 He concludes that the mineral is of mechanical origin, and differs 

 from bole merely in a greater amount of mechanical action when 

 placed in water, and that it is therefore not entitled to a special 



Quartz crystals from Newark, Dcl.—\V. W. Jefferis finds doubly 

 terminated quartz at this locality. 



A nezv mineral from Canada.— A. E. Foote draws attention to 

 some olive-green crystals from Hull, Canada, which he supposes 

 to be new. 



A peculiar twinned Garnet.— W. W. Jefferis exhibits a twinned 

 garnet where the smaller crystal fitted loosely in a cavity in the 



On Diorite.—E. S. Reinhold describes a diorite from Placer 

 county, Cal., closely resembling the " Napoleonite " of Corsica. 



A new locality for Allanite.— Isaac Lea finds allanite with zir- 

 con at Yellow Springs, Chester county, Pa. 



A mew locality for Copiapite.—E. S. Reinhold finds copiapite at 

 Mahanoy City, Pa. 



On Pkytocollite.—W. C. Lewis describes more fully the mineral 

 from Scranton, giving an analysis, and suggests the term phyto- 

 collite as generic for the related jelly-like hydrocarbons found in 



locality for Hayesine. — N. H. Darton 1 





hayesine in soft fibrous crystals coating datholite and calcite in 

 cavities in the trap of Bergen Hill, N. J. An analysis gave 



CaO BO, H 2 



18.39 46.10 35.46 = 99.95- 



The slender crystals were grouped together, and lay like little 

 white mats upon the calcite crystals. This is an interesting oc- 



The third appendix to Dana's Mineralogy (Wiley & Sons, 

 N. Y.).— Professor E. S. Dana has done a great service to miner- 

 alogists in the careful preparation of a volume bring mg .'" 

 knowledge of mineralogical species up to the present time, bi 

 the last appendix was prepared, seven years ago, a large nurn^ 

 of new species have been added, and much mineralogical wu 

 has been done. The present appendix contains descriptions 



K4mer. Journ. Sc, June, 1882, p. 458. 



