W. M. Foote-^Shower of Meteoric Stones, Arizona. 441 



fresh fracture of many fragments. Visitors from nearby towns 

 soon gathered the larger stones. Yon Achen, who saw them 

 fall, reported that they were too hot to pick up. Two accounts 

 state that they became lighter in color after cooling. Except 

 for about ten kilos sent away, all were acquired by the Foote 

 Mineral Company of Philadelphia. 



There is an Aztec post-office in Yuma Co., Arizona, but no 

 post-office or telegraph station at Aztec, Navajo Co. Hence 



Fig. 4. 



Fig. 4. Specimen throe-quarters buried in wet soil, resulting in rust 

 and exudation of molysite. Checked surface exposed. Oblique angle of 

 flight indicated by soil line, xl - diameters. 



the name of Jlolbroolc, six miles distant, is used to designate 

 the fall. 



Macroscopic Features. 



Externally the stones present all the commoner character- 

 istics of aerolites. The primary crust, begun on the entrance of 

 the meteor into our atmosphere with its high planetary veloc- 

 ity, and prior to the first explosion, is almost universally pres- 

 ent. It coats broadly rounded surfaces and is generally dull 

 black, being about 0'3 mni thick. A checking or crackling of 

 this crust, due to unequal expansion, is often noticeable, as 

 shown in fig. 4. The secondary crust, formed on the fractured 

 surfaces produced by this first disruption, is somewhat shiny 



