coral and coral reefstxt下载

《coral and coral reefs》txt下载简介:

Coral and Coral Reefsby Thomas H. HuxleyTHE subject upon which I wish to address you to-night is the structureand origin of Coral and Coral Reefs. Under the head of "coral" thereare included two very different things; one of them is that substancewhich I imagine a great number of us have champed when we were verymuch younger than we are now,the common red coral, which is used somuch, as you know, for the edification and the delectation of childrenof tender years, and is also employed for the purposes of ornament forthose who are much older, and as some think might know better. Theother kind of coral is a very different substance; it may fo