Plate V. Photograph of fossil casts of ice crystals seen on the 

 under side of flaggy layer of calcareous sandy rock in the upper part 

 of the Eagle Ford at Fossil Knobs, about two miles northwest from 

 the Chisos Mining Company's property, Brewster County, Texas. 

 It will be seen that some of the crystals are gently curved. Similar 

 curving crystals are also seen in the figures showing recent growths 

 at Rock Island, Illinois. Compare with Plate IX. Slightly reduced. 



