ARG SOE CON li Nek Ss: 
PART I—ON THE HYDROCORALLIN &. 
Introduction, 
Explanation of terms employed, 
Section I.—On THE STRUCTURE OF THE MILLEPORID. 
Introduction—Mode of occurrence of Millepora nodosa ; its appearance when living, 
Literature of the subject, 
Methods employed, 
Structure of the hard and soft parts, 
Main structure of the ccenosteum, 
Histology of the ecenosteum, 
Chemical composition of the ccenosteum, 
Structure of the zooids, 
" % ecenosare, 
op 0 nematocysts, 
General remarks on the structure of the MILLEPORIDA, 
Vegetable parasites of the MILLEPoRIDa, 
Section I].—On THE STRUCTURE OF THE STYLASTERID®. 
Introduction, 
Literature of the subject, 
Methods employed, 
Structure of the hard and soft parts in the several genera of the STYLASTERIDA, 
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