138 SOME "WONDERS OF THE SEA. 



white, and that the upper portion is coloured with 

 crimson, yellow, " eau-de-Nile " green, pale grey, and 

 other hues, no two specimens being exactly of the same 

 colour. 



Then there are the true Corals of commerce, some- 

 times white, sometimes red, and sometimes pink, the 



GOBLET CARYOPHYLLE. 



last-mentioned being of the most value in the manufac- 

 ture of ornaments. 



All the true Corals have the stony core solid and 

 branch-like, and slightly grooved on the exterior. At 

 irregular intervals there are small rounded projections, 

 radiated in star-like fashion above. These mark the 

 spots in which the living polypes were placed, the 



