Explanation of Plates 



Plate I. 



Two views showing the form of the Biithfield meteorite and the 

 variable character of the crust. ^^ natural size. 



Plate II. 



Biithfield meteorite. Thin section x 58 showing the relation of 

 the nickel iron (black) to the enstatite (white). 



Note cleavage cracks in the enstatite filled with nickel-iron. 



