BULL. GEOL. SOC. AM. 



VOL. 18, 1906, PL. 70 



FKiriu: 1. — riiii-i'dCKArii oi' oi'iiiniA.v UJir.A Moxstdi: ) 



Sliowuig opliitk' patttTii. Kindness of Zoological Department of Jlichigan Agi-icultnral 



College 



S 



:«"fm 



•%-■ 



FlIiURE 2. DlA.MOXI) DlIILL C(II!r. 



Ophitic mottling bi'ouglit ont near chlorite seam. Kindness of \V. .1. I'enhallegon 





ym*f 



FiGUEE 3. — Ophitic Texture ix Thin-section 



After Irving. Monograph v, plate ix 



OPHITIC TEXTURE 



