I 
42 EASTMAN. 
The following list contains a brief account of the discovered 
iron meteorites of Mexico condensed from all the sources of 
information to which I have had access. The estimated 
weights as originally given, except where accompanied by 
careful measurements, are probably very much exaggerated, 
but where any valid clue has been given to the size of the 
mass the weight has been carefully computed. In most 
instances those masses which are most widely known are 
recognized by the name of the discoverer or the person who 
brought it within the range of scientific examination, or by 
the name of the locality where it was found, and it has been 
deemed advisable to retain these names as far as possible. 
DISCOVERED METEORITES. 
State of Coahuila. 
1. The Bonanza Masses, —These masses, fourteen in number 
according to one authority, and thirteen according to another, 
were said to have been located in an open space about one- 
quarter of a mile square. The top of the largest was said to 
be four feet above the surface of the ground; it was shaped 
like a bee-hive, and was five feet in diameter where it entered 
the ground. It is remarkable that nothing more definite 
has ever been ascertained about this enormous mass of iron. 
If the above description is true the mass must have weighed 
at least 13,600 kilograms. 
2. The Butcher Masses. —These masses were brought from 
Mexico by Dr. IT. B. Butcher, of Philadelphia. They were 
described by Dr. Butcher before they left Coahuila as con¬ 
sisting of “ eight pieces, varying from 290 pounds, which is 
the smallest, to 654 pounds, which is the largest, making a 
total of nearly 4,000 pounds.” So far as I can learn, only six 
pieces reached the United States, at first, and they weighed 
respectively 290, 430, 438, 550, 580, and 654 pounds, or, in 
the aggregate, 2,942 pounds. Most of these masses came into 
the hands of Professor J. Lawrence Smith and finally went 
to the Museum of Harvard College. Subsequently, two other 
