304 FIELD CoLuMBIAN MusgEumM—GEo_Locy, VoL. I. 
over this area that Preston suggests a meteoric shower might have 
extended. But an extension of a shower over an area so large, espe- 
cially in width, would be quite unprecedented so far as present obser- 
vations go. It seems to me, therefore, from a consideration of 
the probable paths, that Long Island and Prairie Dog Creek must be 
regarded as of separate origin from Ness County, Kansada, Jerome 
and Oakley, but that the four latter may, if only the paths are taken 
into consideration, belong to the same fall. 
(2) The constitution and structure of the stones: On this point, 
unfortunately, little evidence is as yet at hand. As Preston remarks, 
the six finds are megascopically very similar. They are all about 
equally oxidized and coated with carbonate of lime, indicating that 
they have lain about the same length of time in the soil, and are all of 
compact texture and possess about,the same quantity of metallic 
grains except Oakley, which contains much more metal than the 
others. The crust of the large stones is, however, thin and dark- 
brown in color while that of the small stones (Ness County) is, except 
Wellmanville, so far as I am able to learn, thick and black. This. 
would indicate some difference in the character of the stones, but per- 
haps not sufficient to warrant considering them different falls. 
From the point of view of structure, Weinschenk states that 
Prairie Dog Creek is sharply distinguished from Long Island*, for in 
Prairie Dog Creek the chondri are very numerous and make up the 
greater part of the stone, while in Long Island the chondri are obscure 
and the structure has a marked crystalline character. Taking into 
consideration, therefore, their distance from the other finds and their 
differences from each other, there seems to be good reason for regard- 
ing Prairie Dog Creek and Long Island.as separate single falls. 
Among the remaining four, Oakley, Jerome, Kansada and Franklin- 
ville, to which should perhaps be added Wellmanville as distinguished 
from Franklinville, Oakley seems on the whole to possess a distin- 
guishing character in its larger quantity of metal. According to 
Preston’s determination it contains 14.44% of metal}, presumably 
nickel-iron, while the percentage of metal (nickel-iron) in Jerome is, 
according to Washington}, only 4.25%. Oakley is also of coarser 
grain and possesses more bronzite than Ness County, as 1 have been 
able to learn by comparing microscopic sections. 
Through the kindness of Dr. Washington I have also been 
enabled to compare a section of the Jerome meteorite with sections of 
Oakley and Ness County. Considerable differences are thus brought to 
light which make it very improbable that Jerome belongs to either of the 
*Tschermak’s Min. u. Petr. Mitth. vol. 14, p. 474. 
tLoc. cit. 
