U. S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 99 PLATE 19 



Fig. 1. — Pima Cuunty (Arizona) luuLrwnLL — a remarkable exhibition of flow structure, 

 the result of jetting during flight. There are some globules of metal in the deeper 

 furrows and also a few bubblelike inclusions. About twice natural size. 



Fig. 2. — Sharply marked groups o: phosphide particles, two inclosing dense areas com- 

 posed of t'lickly crowded phosphide particles. Picral 40 seconds; X about 3>. 



