216 APPENDIX. 



reefs. — Jllangs, however, is described (by Freycinet, p. 219, 

 Hydrog.) from some Spanish charts, as formed of small 

 islands placed " aii milieu des nombreux recifs ; " and as 

 these reefs in the general chart of the group do not project 

 so much as a mile; and as there is no appearance from a 

 double line, of the existence of deep water within, I have 

 ventured, although with much hesitation, to colour them 

 red. Respecting Folger and Marshall Islds. which lie 

 some way east of the Marianas, I can find out nothing, 

 excepting that they are probably low. Krusenstern says 

 this of Marshall Isld. ; and Folger Isld. is written with 

 small letters in D'Urville's chart ; uncoloured. 



Bonin or Arzobispo Group. — Peel Isld. has been 

 examined by Capt. Beechey, to whose kindness I am much 

 indebted for giving me information regarding it : " At Port 

 Lloyd there is a great deal of coral ; and the inner harbour 

 is entirely formed by coral-reefs, which extend outside the 

 port along the coast." Capt. Beechey, in another part of 

 his letter to me, alludes to the reefs fringing the island in 

 all directions ; but at the same time it must be observed 

 that the surf washes the volcanic rocks of the coast in the 

 greater part of its circumference. I do not know whether 

 the other islands of the Archipelago are fringed; I have 

 coloured Peel Isld. red. — Gra?nfius Isld. to the eastward, 

 does not appear (Meare's Voyage, p. 95) to have any reefs, 

 nor does Rosario Isld. (from Lutke's chart), which lies to 

 the westward. Respecting the few other islds. in this part 

 of the sea, namely the. - Sulphur Islds. , with an active 

 volcano, and those lying between Bonin and Japan (which 

 are situated near the extreme limit in latitude, at which reefs 

 are formed), I have not been able to find any clear account. 



West End of New Guinea. — Port Dory. From the 

 charts in the Voyage of the Coquille, it would appear that 



