BULL. GEOL. SOC. AM 



VOL. 24, 1912, PL. 34 



A FRAGMENT OF A MODERN STONY COLONY OF CALCAREOUS_ALG/E <LITHOPHYLLUM ANTILLARUM, 



FOSLIE AND HOWE; 



This Bpedmen from L'«>rt<» Rico is about 8 u 

 alga? of other Bpecies. Reproduced through the courtesy 

 cal Garden 



ocbee high and is partly incrusted with more delicate 

 courtesy of Dr. Marshall A. Howe, New York Botani- 



