310 The American Geologist. :May, i89o 
the writers. They were scattered over an area of fifty or sixty 
acres, imbedded at shallow depths in the pleistocene upland.' 
According to Prof. Cragin they are closely allied in general 
characters, and belong to the class of iro7i, as distinguished 
from the stony meteorites, only one of them having a specific 
gravity above 7. The others seem to have been all fragments 
of one large pallasite of which the total weight, so far as dis- 
covered, was about 1,500 pounds. Three of these pieces have 
given a specific gravity between 5 and 6. Prof. Hay gives the 
specific gravity of our 6-lb. specimen at 5.17. 
Before cutting, the larger of the specimens examined by us 
weighed 211 pounds. It was approximately globular, with 
a broad shallow depression that encircled it about half way. 
Its exterior is oxidized as by long exposure, some of the miner- 
al grains having been profoundly affected by the penetration 
of iron oxide. Indeed the round or amygdaloidal masses of 
olivine ( ?) are changed so as to appear like some other mineral. 
In some cases this change has followed along a thin film, or 
between two outer planes of contiguous masses, coloring the 
included portion jet black and leaving the rest of the glassy? 
yellowish to white, brittle olivine (?) almost unaffected. After 
the mass was cut these two contrasted conditions of the olivine 
were so conspicuous that they were first taken for- separate 
minerals. The external groove above mentioned coincides, 
superficially, with an area where metallic iron is absent. Other 
shallow de]3ressions on the surface are due to the absence of 
iron. An irregular roughly triangular area is seen on the ac" 
companying plate* projecting from the outer margin toward 
the centre, in which no metallic iron is visible. The mass was 
first cut twice through, giving a slab about an inch thick, and 
two jjlano-convex lenses. The smaller of the lenses was 
also cut into smaller samples, weighing from half a pound 
to two pounds each. The larger lens still weighs about 125 
pounds. A photograph of the cut surface of the inch slab, re- 
produced in the accompanying plate, shows the manner of 
^The specimens, with their respective weights, so far as known by us 
are as follows : Owned by George F. Kunz, four, weighing 466, 345, 75 
and 40 pounds; owned by N. H. Winchell, two, weighing 211 and 6 
pounds ; owned by F. H. Snow, one, weighing 54 pounds ; owned by F. 
W. Cragin, one, weighing 125 pounds. The whereabouts of that weigh- 
ing four pounds is not known, nor are the weights even of the re- 
maining six specimens. 
*The plate will accompany the second part of this paper. 
