Proceedings U. S. National Museum, Vol. XI, 1888.— Merrill. 



Plate XXXIV. 









V*. 



T§>*> 



^S - • i* a' y I 



MlCROSTRUCTURE OF PERIDOTITE, LITTLE DEER ISLE, MAINE. (Pages 191-195.) 



Fig. 1. Section magnified about 30 diameters. The white mottled areas are serpentinized olivine. The 

 gray, shown indistinctly only at the right, is augite, and the black interstitial matter altered 

 liase ( ?). (Section 39044-a. | 



Figs. 2, 3, 4. The same magnified about 40 diameter, lowing enlarged augites. (Sections 3 044-b and 

 39044-e.) 



