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Scientific Intelligence. 



England; all were rolled specimens. Nothing organic was de- 

 tected in the flint. He cites from Dr. Guppy's letters of 18S3 

 that the flints of Ugi, another island of the group, are found in the 

 soil. The prevailing rock of the island is an earthy foraminiferous 

 limestone, and no flints were found in it. 



5. Paramelaconite and Footeite. — Dr. G. A. Koenig has re- 

 cently described two new copper minerals which occur closely 

 associated with each other upon a mass of cuprite and limonite. 

 They were obtained by A. E. Foote from the Copper Queen mine 

 at Bisbee, Arizona. 



Pa ramel aconite occurs in steep pyramidal crystals (A, fig. 1.) 

 terminated by the basal plane, the pyramidal faces are strongly 

 striated ; from the measured angle, 001 /\ 111 = 58° 50', the ver- 

 tical axis c = 1 *6643 is calculated. The hardness is 5, sp. gravity 

 5-833. Color purplish black, on the fracture pitch black. An 

 analysis gave: CuO 100*58, Fe 2 3 0*64 = 101-32, which is inter- 

 preted as : CuO 87-66, Cu 2 1 1 -70, Fe 2 O s 0-64 = 100. It is hence 

 essentially CuO, like melaconite and tenorite, but is distinct in 

 crystallization, and a relation in form to octahedrite is suggested. 



1. 



Fig. 1. — Paramelaconite (A) with, acicular crystals (B) of Footeite, upon mam- 

 miliary limonite (C, D) ; this passes into a granular mixture of limonite and cuprite 

 (E), inclosing native copper (F). Fig. 2. — Footeite. Figures from Koenig's paper. 



Footeite occurs in miuute prismatic crystals referred to the 

 monoclinic system (fig. 2); they are terminated by a pyramid and 

 two domes; the prismatic angle is 49° and 131°. The color is deep 

 blue. An approximate analysis on 0'0165 gr. gave : CuO 63 - 7, 

 CuCl 2 13-5, H 2 22-8 = 100. The calculated formula is 8Cu(OH) 2 

 . CuCl 2 + 4H 2 ; this brings it somewhat near tallingite which, 

 however, contains about twice as much chlorine. — Proc. Acad. 

 Nat. Sci. Philad., 284-291, 1891. 



6. Notes on the Genus Acidaspis ; (2) Note on Coronura 

 aspectans Conrad (sp.), the Asaphas diurus Green ; (3) Observa- 

 tions on the Terataspis grandis Hall, the largest known Tfilobite / 



