May, 1902. METEORITE STUDIES, I—FARRINGTON. 311 
tative analysis of some ‘flings from this mass showed the presence 
of nickel and indicated, as might be expected since no other source of 
iron probably lay open to the Mound Builders, that the objects were 
made of meteoric iron. Upon removing the rust from one surface 
and submitting the area so exposed to the etching action of nitric 
acid, the meteoric nature of the iron was proved beyond question by 

Fic. 5. Outline of Hopewell Mounds meteorite, with etched portions showing curving of the 
Widmanstatten figures, probably due to heating and hammering that 
the mass has received,  X &. 
the appearance of Widmanstiatten figures. The nature of these fig- 
ures is shown in Figs. 5 and 6, where the structure of bands of kam- 
acite separated by thin ribbons of tenite can be plainly discerned. 
The width and continuity of the kamacite bands varies consid- 
erably. Some are at least a millimeter in width and from these 
they grade down to not over twice the width of the corresponding 
tenite ribbon. While many are continuous in a general way fora 
length of from 10 to 20 millimeters, the tanite runs through them all 
in a series of anastomosing branckes and in places gives the impres- 
