Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLVII. No. 4. — July, 1911. 



THE PEGMATITES OF THE RIEBEC KIT E-AEGI RITE 



GRAMTE OF QilSCY, MASS., U. S. A.; THEIR 



STRUCTURE, MINERALS, AXD ORIGIN . 



By Chables H. Warren and Charles Palache. 



With Three Plates. 



