May, 1902. METEORITE StTupIESs, I—FarRINGTON. 295 
bounded chiefly by pinacoids. The chromite more often has a red 
tone than the brown described by Weinschenk, its deep red grains 
being frequently seen in the sections. Both nickel-iron and troilite 
grains sometimes enclose small siliceous particles of what is probably 
chrysolite, indicating the latter to be the earlier formation. 
As regards classification, the Long Island meteorite is classed 
by Wiilfing as a crystalline spherical chondrite, Cck.* Beaver Creek, 
Bethlehem, Lumpkin, Menow, Prairie Dog Creek, Richmond and 
Savtschenskoje are other meteorites included in the same class. 
Brezina classifies Long Island as a crystalline chondrite Ck.,+ in 
which group are included Erxleben, Klein-Wenden, Kernouve and 
many others. By Meunier, Long Island is put in Class 34, Erxlebenite, 
which includes monogenic meteorites of fine grain. made up chiefly of 
chrysolite and bronzite and containing visible grains of nickel-iron. 
Bluff, Erxleben, Kernouve, Klein-Wenden, Menow and Pipe Creek 
are among the other meteorites brought by Meunier into this class. 
Thus the place of Long Island in classification seems to be quite 
generally agreed upon. Differences can, of course, be noted from 
other meteorites with which it is classed, it being, for instance, more 
compact and of finer grain than Beaver Creek and containing much 
less nickel-iron than Pipe Creek. 
Of its well-marked crystalline character, however, there can be 
no doubt, nor, to my mind, of its monogenic origin. 
Absorption by a siliceous magma, of iron in preference to nickel, 
seems to me to afford a reasonable explanation of the high percentage 
of nickel in the metallic portion of the stone shown in the following 
analysis. Such a high percentage of nickel in the nickel-iron of stone 
as compared with iron meteorites 1s common and must be of some 
significance. If the meteorite is simply tuffaceous in origin, one would 
expect the nickel-iron to have the composition of that of the iron 
meteorites uninfluenced by the accompanying silicates, but such is not 
the case. 
Again, the outlines of the crystal individuals in the Long Island 
meteorite are sharply and fully developed and are in stable and mag- 
matic position with reference to each other. Some of them are larger 
than the individual chondri and yet exhibit no sign of wear or fracture. 
Accordingly the believers in the tuffaceous character of all stone 
meteorites would find, I think, little to support their views in an 
examination of this stone. I can see no indications in its structure 
of any other origin than one of cooling in place from a fused magma, 
*Die Meteoriten in Sammlungen, Tubingen, 1897, p. 453. 
* +Die Meteoriten Sammlung des K.K. Naturhistorische Hofmuseums, Wien, 1895, p. 353. 
