218 



Scientific Proceedings, Royal Dublin Society. 



11. — Constituents of the Coee, the Middle and Outer Zone op an 



INCOMPLETELY-ALTERED PhOSPHOEITE BaLL OP 15 CM. DiAMETEE. 



III. — Matrix op the Phosphorites, Silurian Slate Eock of Zurozewka. 



