156 REIPORTS ON INVESTIGATIONS AND PROJECTS. 



EXPIvANATlON OF PLATES. 



The disks to which the specimens are attached are 8 inches in diameter and have 

 been reduced in the figures to about 2.5 inches in diameter, making the specimens 

 approximately 5/i6ths natural size. 



Plath; 4. 



Fig. I, Culture 8. — Favia fragum: a, b, c, e, from planulae that attached in the aquarium 



between June 3 and 10, iQio; d, probably adventitious. Photographed June 



19, 1911. 

 Fig. 2, Culture 24. — a to g, Porites astrcoides, from planulae that attached in the 



aquarium between May 29 and June 6, 1910; h, Favia fragum, adventitious. 



Photographed June 10, 191 1. 

 Fig. 3, Culture 38. — a, Favia fragum, adventitious; b, Porites astreoides, probably 



adventitious; c, d, e, Porites astrcoides, from planulae that attached in the 



aquarium between June i and 8, 1910. Photographed June 19, 191 1. 

 Fig. 4, Tile 15. — Corals attached naturally to the lower surface of a tile planted June 7, 



1910. a, Agaricia fragilis van; c, Porites clavaria; all others Favia fragum. 



Photographed June 14, 191 1. 

 Fig. S, Tile i. — Mceandra areolata. Photographed June 6, 1910. 

 Fig. 6, Tile i. — Photographed June 14, 191 1. 



Plate 5. 



Fig. I, Tile 6. — Mceandra areolata. Photographed June 6, 1911. 



Fig. 2, Tile 6. — Photographed June 14, 191 1. 



Fig. 3, Tile 2. — Mceandra areolata. Photographed June 6, 1910. 



Fig. 4, Tile 2. — Photographed June 14, 191 1. 



Fig. 5, Tile 11.— b, Porites astreoides; c, Porites furcata. Photographed June 6, 1910. 



Fig. 6, Tile 11.— Letters as in figure 5. Photographed June 14, I9ii- 



Fig. 7, Tile 14. — Porites furcata. Photographed June 6, 1910. 



Fig. 8, Tile 14.— Photographed June 14, 1911. 



Plate 6. 



Fig. I, Tile 140.— and b, Porites furcata; c, Porites astreoides.. Photographed June 



6, 1910. 

 Fig. 2, Tile 14a.— Letters as in figure 3. Photographed June 14, 191 1- 

 Fig. 3, Tile 12.— Porites clavaria. Photographed June 6, 1910. 

 Fig. 4, Tile 12.— Photographed June 14, 1911. 



