Intelligence and Miscellaneous Articles. 319 



elevated and near the ordinate 0*3. Its height increases but little 

 with the brightness of the flame. 



The following are the numbers found for lithium : — 



Brightness. Height. 



6-13 0-29 



4-6 0-285 



2-6 0-275 



Por sodium the brightness varied from 1 to 15, and the height 

 from 0-28 to 0*30. It is seen that the augmentation of the bright- 

 ness is effected chiefly by the widening of the lines. 



On the other hand, the nebulous lines (a, y, and 5 of strontium, 

 a and (j of calcium) have a centre of gravity of which the height is 

 comprised between and 0-03. It is probable that the centre of 

 gravity rises when the brightness is increased ; but my experiments 

 are too incomplete to enable me to affirm any thing on this point. 

 — Comjptes Rendus de VAcademie des Sciences, vol. lxxxiii. pp. 269- 



272. 



NEW MINERALS. 



Professor C. IT. Shepard has named and partially described the 

 following new species : — 



Vanuxemite. — Occurs in small irregular patches scattered through 

 a firm ochry aggregate, proceeding from the decomposition of 

 several zinc ores. Massive, impalpable, with an even or conchoidal 

 fracture. Colour white, dull. H. = 2*5-3, Gr. =2'5. Does not 

 adhere to the tongue, but emits a feeble clayey odour on being- 

 breathed upon. B. B. fuses readily to an opaque enamel. Com- 

 position Si0 2 35-64, A10 3 11-70, ZnO 32-48-36, H o 14-80-19-88 

 = 99-70. Locality, Sterling Hill, N. J. 



Keatingine. — Considered " probably a new species." Closely re- 

 sembles Fowlerite in crystalline structure, but angles obtained on 

 cleavage prisms 64° and 116°. Does not lose lustre on weathering. 

 H. =4*5-5, Gr. =3*33. B. B. fuses to a reddish semitransparent 

 glass. Composition Si0 2 47-8, MnO 27-7, ZnO 5-6, CaO 18-0, 

 H 2 O 0-8 = 99-9. Locality, Franklin, N. J., where it was found in 

 a mass of yellow garnet. 



Calcozincite. — Massive, fine-granular ; interpenetrated with 

 fibres of asbestus and Sussexite. Lustre vitreous. Colour light 

 orange-red. Streak lemon-yellow. Translucent. H. = 3'5, 

 G. = 3' 95. Effervesces slightly with acid. B. B. blackens. Com- 

 position ZnO 81-00, CaO 7'56, C0 2 5-80, H 2 04-26, MnOtr=98'62. 



Eucldorite. — Massive, in coarse elongated scales. Colour light 

 olive-green. Powder pale green. Lustre subpearJy. II. =2-5 — 3, 

 Gr. =2-71. B. B. fuses with difficulty on thin edges to a greenish- 

 grev enamel. Decomposed by sulphuric acid. Composition Si0 2 

 35-51-38-46, A10 3 6-80, PeO 15'52, (MgO 38-07), II 2 O6-10; 

 100. Locality, Chester, Mass., where it occurs in a layer on both 

 sides of an extensive vein of albite. 



Pelhamine. — Porms irregular seams and masses sometimes a foot 

 thick at the asbestus-mine at Pelham, Mass. Resembles a black 

 serpentine closely. Almost without lustre. Powder dark greenish 

 grey. II. =5*0, O. =2-9-3-2. B. B. infusible. Composition 



