Dr. Walter Flight— On Meteorites. 63 



It closely resembles the stone of Searsmont (21st May, 1871) in 

 colour, but is less cbondritic, and only exhibits this characteristic of 

 certain meteorites in a very imperfect manner. Crystals of what 

 apjDcar to be augite are observed imbedded in an amorphous whitish 

 ground-mass ; nickel-iron is present thickly scattered throughout 

 the stone in minute rounded lustrous grains ; while troilite is now 

 and then met with in grains of considerable size or aggregations of 

 imperfect crystals. A fragment partially covered with crust was 

 found to have a specific gravity =: 3-81 ; that of another fragment 

 without crust was = 3 ■58. 



Mechanical separation of the ingredients was attempted, and 5'66 

 per cent, of nickel-iron and 1-34: per cent, of troilite were isolated. 

 Of the remaining siliceous portion rather more than one-half gela- 

 tinized with acid, and was, presumably, olivine ; the remainder, 

 according to Pi-of. Shepard, consists of "augite, some felspathic 

 species, and chladnite," by which last mineral enstatite presumably 

 is meant. There exists a rumour that a second meteorite has been 

 met with twelve miles distant from the above. 



Dr. Lawrence Smith found the density of this stone to vary from 

 3 '4 to 3'6 and its composition to be : — 



Stony matter = 90-81 ; Nickel-iron = 5-34 ; and Troilite = 3-85. 



The nickel-iron contained : — 



Iron = 86-18 ; Mckel = 12-02; Cobalt = 91 ; Copper = 0-04. 

 and the stony part consisted of : — 



Soluble part = 69-00 ; Insoluble part = 41-00. 

 which are made up of — 



Silicic acid 



Iron protoxide 



Alumina 



Magnesia 



Manganese 



Soda, with trace of potasb and lithia . . . 

 Lime 



The analysis clearly shows that the stony part of this meteorite 

 consists of the usual mixture of olivine and pyroxene ; the hydro- 

 siderite predominating in the former and bronzite in the latter. 



Two minerals were detached in small quantities and analyzed 

 separately. The first was a dark-coloured mineral readily seen in 

 small parcels or veins ; it was almost entirely decomposed by 

 hydrogen chloride ; its composition was : — 



Silicic acid 41-10 



Iron protoxide 27-20 



Alumina 0-80 



Magnesia 28-31 



Manganese 0-32 



Soda 1-35 



It clearly belongs to the olivine type. The other mineral was found 

 only in one part of the specimen which reached Dr. L. Smith ; it 

 formed a white crystalline mass, and weighed about 20 mille- 

 gramraes. It resembled enstatite, but was completely decomposed 

 by hydrochloric acid, and as far as he could judge consisted only of 



Soluble. 



Insoluble. 



34-52 



54-02 



30-01 



18-10 



0-43 



2-30 



32'50 



23-4-5 



061 



0-36 



0-89 



1-58 





Trace. 



