756 INDEX. 
Wilton, C. P. N., siliceous stumps in Aus- | Zoophytes, growth and structure of, 80, 
tralia, 484, 
Woahoo, see Oahu. 
Wolchonsky, island of, 54. 
Wollongong Rocks, 485. 
Wood, silicified, in Oregon and California, 
658, 669. 
in Australia, 483, 491. 
in Chili, 584, 
in Luzon, 542. 
Zeugophyllites elongatus, 715. 
THE END. 
85. 
secretion of coral by, 80, 84. 
budding of, 83. 
forms of, 84. 
Aleyonacea, 87. 
Hydroidea, 88. 
Bryozoa, 88. 
causes influencing growth, 93. 
depths of growing, 97. 
rate of growth of, 101. 
distribution of, 95, 134. 
