DISTRIBUTION OF GROWTH-FORMS. 175 



G. Dax 2. 



G. Dax 3. 



G. Dax £, 



G. Girondc 1. 



G. Girondc 2. 



G. Paris Basin 3. Perhaps thick encrusting. 



G. Paris Basin 7. 



G. Paris Basin 10. 



Q. Paris Basin 12. 



G. France a. 



G. Hampshire 1. 



1 G. Antigua 1. 



G. Eoplanate. 



Produced by the expansions of the primitive colony mainly round the edges. According 

 as there is any growth in thickness or not we obtain (a) thick, or (b) thin colonies, mostly 

 encrusting ; the very thin sometimes expand freely. 



(a).... Thick encrusting. This may easily become irregularly massive : — 

 G. Alessandria 1. 

 G. Turin 1. 

 &, Vim no Basin 4- 

 G. Crimea 1. 

 Doubtful :— 

 G. Philippines 4- 

 G. Java Sea 2. 

 G. Paris Basin 3. 

 G. Paris Basin 11. 



(b) Thin:— 



G. Great Barrier Reef 1. See also under E b. 



G. North- West Australia 2. 



G. North- West Australia 3. 



G. China Sea 2. 



G. China Sea 3. 



G. Maldives 1. 



G. Mauritius 1. Columns rise from its surface. 



G. Bed Sea 5. 



G. GenoK S 



G. Genoa 6. 



G. Paris Basin ,i. 



G. Paris basin 8. ' 



H. Forms whose method of growth cannot yet be defined. 



&. Samoa 1. ? Columnar. 

 G. Vicenza 10. ? Branching. 



G. Coulances 1. ? Oval, drawn out into finger-shaped knobs which may have 

 waved about at the tips of weeds. 



