PLATE 47. 
CLADOPORA RETICULATA. Niagara. 
1. Lateral view of a corallum from the Dpper Niagara white clay, 
thirteen feet below the Niagara and Devonian passage-beds, near 
Louisville. Collection of the author. 
2. View of a corallum, with its apex of growth centrally situated, and its 
fronds radiating in all directions therefrom; found in the horizon - 
of example 1, near Louisville. Collection of Mr. Nettelroth. 
