Marcu, 1907. Iron METEORITES — FARRINGTON. 73 
drites, while graphite and diamond are also largely confined to the 
octahedrites. Daubreelite and chromite, which are common con- 
Stiients. of the» hexahedrites, are rare. in the octahedrites. > The 
nickel-cobalt content of the octahedrites varies from 5% to 15% 
percent. 
A. NORMAL OCTAHEDRITES. 
In the normal octahedrites the lamellar structure extends without 
change of direction, except for occasional curving, through the indi- 
vidual. This is true even for large masses like those of Charcas, 
Chupaderos, and Willamette. 
iC OARSES TT OCTAHEDRITES. 
Width of lamellz from many millimeters down to 2.5 mm. The 
nickel-cobalt content is as a rule slightly higher than in the hexa- 
hedrites, reaching in some cases 7 per cent. ‘The presence of cohen- 
ite and graphite is characteristic of the group. Canyon Diablo con- 
tains diamond. The octahedral structure and presence of lamelle 
is often difficult to discern, so that some members of the group 
have been classed as hexahedrites. 
L\HEDRITES. - 
Bader. Total. Sp. Gr. Analyst. Reference. 
eee Boon55 poi. Whitheld....,... Ig02, Proc. Roch. Acad. Sci., 1V, 85 
Dats /s.2 99-719} 7.703 |H. Moissan.........|1904, Comptes Rendus, CXXXIX, 776 
Se Syn, J ey a ea Booth,Garrett & Blair|1g05, Proc. Phil. Aca. Sci., LVII, 875 
Be 6 ace 29 We 9 Sy ae eae 2. o (HON. Stokes, was. 1895, A. J. S. (3), L, 252-4 | 
ae 100.00 |..... .....|Mariner & Hoskins. .|/1g00, A. J.S. (4), [X, 286 
ae ee et er semiceres 2 |) LA OMith.. ss... 0. (1860, A.J. 9. (2), XXX, 240 
Be Gs OI RS py Bey Pearse enithta.'s +n 11070, AA Jp (3), Li 72-73 
| es 100507 }2s...-.->..|O. Hildebrand .......|1903, Mitt. f. Neu Vorp.u.Ritigen, XXXV;4 
M}o8.34| 7.052. - |C.T. Jackson. ...<-. 1863, A. J. S. (2), XXXVI, 261 
Beas | 98.80 |- 7.952 “ are 1 805, Ths], na) VL, 201 
aS 97.92 Te7pae SiCeV. Donhorst'y: + ....j1800, Neues Jabrb., 372 
a. 98.74 |7.63 -7.71 |A. Duflos...........|1848, Ann, Phy. Chem., LX XIV, 61-65 
a 100.00 ry ae C. Rammelsberg....|1848, Ann. Phy. Chem., LX XIV, 443-448 
