458 



DR. W. FLIGHT^ GREENLAND METEORITES. 



ing the ridge. — IX. Loose, much weathered bieccia, from the top 

 of the ridge, in irregularly shaped fragments. It can be broken 

 in pieces with the hand, is much rusted, and closely resembles the 

 oxidation of the metal blocks. Like the preceding specimen, it 

 incloses rounded fragments of the rock forming the ridge. The 

 specific gravity is about midway between that of iron and of 

 magnetite. — X. The broken-up basalt, resembling that of the 

 ridge, inclosed in the weathered breccia IX. 



Silicic acid - 

 Titanic acid - 

 Phosphoric acid 

 Iron sesquioxide 

 Alumina 

 Chromium oxide 

 Magnetite - 

 Iron protoxide 

 Manganese prO' 



toxide. 

 Nickel and Co 



bait oxides. 

 Magnesia 

 Lime - 

 Soda 

 Fotash - 

 Iron 

 Nickel - 

 Cobalt - 

 Copper - 

 Hydi'ogen - 

 Carbon - 

 Sulphur 

 Chlorine 

 Water - 

 Residue 



Specific Gravity - 



I. 



49-18 

 0-52 

 0-13 

 5-52 



13-52 



10-31 



0-28 



11-51 

 1-84 

 0-06 



trace 



trace 

 0-34 



100-04 



3-016 



IL 



48-04 

 0-39 

 0-07 

 6-89 



13-13 



11-14 

 0-11 



5-17 



10-87 



2-83 



0-06 



0-25? 

 0-79 

 0-98 



trace 



100-72 



3-024 



IIL IV 



42-72 

 trace 

 trace 

 1-64 

 16-01 



14.27 

 trace 



7-93 



10-10 



1-65 



0-13 



4-57 



0-44 



trace 



trace 



0-30? 



0-30 



0-82 



100-46 



3-169 



34-72 



4-88 

 31-83 



5-53 



9-35 

 10-19 

 1-00 

 0-27 

 0-09 



0-53 

 0-12 



3-80 

 •942 



19-18 



14-85 

 0-29 



7-24 



8-73 



0-79 



trace 



5-01 



0-25 



trace 



trace 



0-31? 



2-55 



trace 



0-23 



)'02 

 •141 



VI. VII. VIII. IX. X. 



44-94 37-92 



22-20 



4-98 

 11-01 

 1-86 

 0-06 

 1-11 



-36 



4-02 

 0-19 



2-86 

 11-57 



1-48 

 trace 



trace 



trace 



trace trace 



0-31? 0-24? 



3-35 6-90 



trace! 0-77 



0-20 trace 



99-47 



2-927 



2-761 



1-04 



0-12 



2-31 



52-51 



1-17 



0-02 



0-30 



0-08 



trace 



28-36 



1-22 



0-30 



0-08 



0-38 



3-52 



0-34 



trace 



•64 



100- 



4-560 



0-81 

 0-12 



77-39 



0-82 



trace 

 0-20 

 O'll 



trace 

 7-73 

 1-81 

 0-33 



0-30? 

 0-51 

 2-33 



trace 

 0-14 



•71 



•570 



41-25 

 0-34 



16-18 

 13-06 



10-78 

 0'25 



6-41 

 7-97 

 1-54 

 0-03 



trace 



trace 



0-49 



0-86 



trace 



0-25 



J-41 

 •85S 



Tschermak examined two microscopic sections of the Ovifak 

 rocks, and compared them with sections of the meteorites of Jonsac, 

 Juvinas, Petersburg, and Stannern, which consist chiefly of augite 

 and anorthitc, with little or no nickel-iron ; they form a class 

 which G. Rose termed " eucritic." Both sections exhibit a crust, 

 as meteorites possess ; it is, however, so altered by oxidation, that 

 it is not possible to determine whether it is the fused crust usually 

 noticed on a meteorite. The crystals of felspar, which, according 

 to NauckhofPs analyses, must be regarded as anorthite, are fully 

 developed ; tliey penetrate the augite, iron, and magnetite, and 

 must evidently have been formed before them. They are com- 

 pletely transparent, and have but few and large cavities, which are 

 filled, partly with black granules, partly with a brown substance 

 of irregular form ; some traversing the length of the crystals are 

 filled with a transparent glassy substance. The augite is of a 

 light greenish-brown hue, traversed here and there by flaws ; it 

 fills gaps between the other constituents, as has been often observed 

 in doleiites and diabases, and encloses individual black grains. In 

 the section containing iron the colourless felspar encloses a black or 

 brown substance running the length of the crystals, or dust-like 



