EXPLANATION OF PLATE 32 



Fig. A. Mammillated surface developed em chert inclusion in gabbro. Aleso 

 Canon, Santa Ynez Mountains. (Two-thirds natural size.) 



Fig. B. Mammillated surface developed on chert inclusion in gabbro. Aleso 

 Canon, Santa Ynez Mountains. (Two-thirds natural size.) 



f 424 j 



