LIST OF PLATES. 



Facing page. 

 Plate 1. Casas Grandes, Tucson, and Canon Diablo irons Title. 



2. Microstructure of (1) Juvinas and (2) Siiergotty stones 16 



3. Microstructure of (1) El Nakhla stone and (2) Estherville 



mesosiderlte 16 



4. Microstructure of (1) Estacado and (2) Selma stones 18 



5. Microstructure of (1) Enstatite chondrule in Elm Creek stone, 



(2) Enstatite cliondrule in Hendersonville stone, (3) Ensta- 

 tite chondrule in Coon Butte stone, (4) Enstatite chondrule 

 in Tennasilm stone, (5) Barred olivine chondrule in Beaver 

 Creek stone 18 



6. Microstructures showing (1) variations in size- and form of 



chondrules in Cullison stone, (2) large oval chondrule in 

 Tennasilm stone, (3) angular chondrule with border of me- 

 tallic iron in Parnallee stone, and (4) clino-enstatite chon- 

 drule in Cullison stone 20 



7. Microstructure of (1) black crust on Allegan stone, and (2) 



of black vein in Bluff stone 20 



8. Two specimens of Admire pallasite, as found 30 



9. Section of (1) metallic portion, and (2) polished slice of 



Admire pallasite 30 



10. Polished slices of (1) Ahumada pallasite, and (2) of Ains- 



worth iron 30 



11. Polished slice of (1) Brenham pallasite, and (2) the Allegan 



meteoric stone 34 



12. Polished slice of (1) Canon Diablo iron, and (2) etched slice 



of Arispe iron 34 



13. Oxidized Canon Diablo iron, (1) as found, (2) sliced to show 



metallic nucleus 50 



14. Etched slice of Canon Diablo iron, showing numerous troll ite 



nodules 50 



15. Casas Grandes iron, weight 3,407 pounds 52 



16. Etched slice of Casas Grandes iron 52 



17. (1) Canon Diablo iron, showing large cavity, and (2) Couch, 



Coahuila, or Sanchez Estate iron 52 



18. Two views of the Cullison stone, as found 60 



19. Polished slices of the Cullison stone, (1) enlarged about 5 diam- 



eters, (2) about two-thirds natural size, and (3) iron sul- 

 phide capped at right by metallic iron 60 



20. Etched slices of (1) Kendall County, and (2) Coopertown irons. 60 



21. (1) Felix stone, as found, and (2) the third largest stone of 



the Fisher fall, weighing 1,300 grams 71 



22. Etched slice of Gibeon (Mukerop) iron 74 



23. Two views of Hendersonville stone, as found 78 



IX 



