Iron 81.56 79.44 Nickel 9.17 9.17 Cobalt 0.44 0.44 Copper 0.08 0.08 Phosphorus 0.49 0.49 Silica 3.63 } Combined with 2.73 } Protoxyd of Iron with } Protoxyd of Iron, } 10.07 trace of Alumina 0.12 } making Olivine } Lime 1.16 } Magnesia 2.43 } Chlorine, } Sulphur, } minute traces traces Chromium, } ----- ----- 99.08 99.69 If the silica found in this analysis be considered to exist in combination with lime, magnesia, and iron, in the proportions to form olivine, it will be necessary to deduct 2.12 per cent. from the amount of metallic iron (equal to 2.73 per cent. of protoxyd of iron), in order to give the silicate the olivine formula, (3 R O, Si O₃). Admitting this to be the correct view, the mass analyzed contains 10.07 per cent. of olivine, and by the addition of the oxygen of the protoxyd of iron the analysis adds up 99.69 instead of 99.08. The variable composition of Schreibersite in different specimens of meteoric iron, and the peculiar character of the insoluble residue of this meteorite, together with the small amount of material in my possession, rendered it impracticable to determine the exact amount of this substance contained in the specimen.