228 APPENDIX. 



Appoo Shoal, which lies near the S.E. coast of Mindoro, 

 has been executed by Capt. D. Ross : it appears atoll- 

 formed, but with rather an irregular outline; its diameter 

 is about ten miles ; there are two well-defined passages 

 leading into the interior lagoon, which appears open ; close 

 outside the reef all round, there is no bottom with seventy 

 fathoms; coloured blue. — Mindoro: the N.W. coast is 

 represented in several charts, as fringed by a reef, and 

 Luban Isld. is said, by Horsburgh (vol. ii. p. 436), to be 

 "lined by a reef." — Luzon: Mr. Cuming, who has lately 

 investigated with so much success the Natural History of 

 the Philippines, informs me, that about three miles of the 

 shore north of Point St. Jago, is fringed by a reef; as are 

 (Horsburgh, vol. ii. p. 437) the Three Friars off Silanguin 

 Bay. Between Point Capones and Playa Honda, the coast is 

 " lined by a coral-reef, stretching out nearly a mile in some 

 places" (Horsburgh); and Mr. Cuming visited some fringing- 

 reefs on parts of this coast, namely, near Puebla, Iba, and 

 Mansinglor. In the neighbourhood of Solon-solon Bay, 

 the shore is lined (Horsburgh, ii. p. 439) by coral-reefs, 

 stretching out a great way : there are also reefs about the 

 islets off Solamague ; and as I am informed by Mr. Cuming, 

 near St. Catalina, and a little north of it. The same 

 gentleman informs me there are reefs on the S.E. point 

 of this island in front of Samar, extending from Malalabon 

 to Bulusan. These appear to be the principal fringing-reefs 

 on the coasts of Luzon ; and they have all been coloured 

 red. Mr. Cuming informs me that none of them have 

 deep water within ; although it appears from Horsburgh 

 that some few extend to a considerable distance from the 

 shore. Within the Philippine Archipelago, the shores of 

 the islands do not appear to be commonly fringed, with 

 the exception of the S. shore of Masbate, and nearly the 



