11 



this communication to rely upon memory alone." It is not here said, 

 all the statements in a particular paragraph, or on a particular page, or 

 relating to a particular subject, but, 'all, in this communication.' 

 From this, we may judge of the credit due to other statements. As stated, 

 it is a key to this and his former reply. After this exposure, his other 

 charges can scarce require more than a simple denial. 



As to geological facts, the reader may refer to the article itself, and 

 read some pages on the elevation of islands in the Pacific, their val- 

 lies, &c. 



Respecting the whole subject of corals belonging to him, his own cita- 

 tion, " all else connected with their history," conveys but one idea to the 

 reader of his attack. 



On page 7 of this appendix, Mr. Couthouy says, "I neglected no op- 

 portunity of making observations on the geological structure of reefs, 

 and it was his (Mr. Dana's) knowledge of this, which led to the proposi- 

 tion by him to publish on this subject jointly with me." Let facts tell 

 the tale. Mr. Couthouy had the zoological branch of the subject, and 

 notwithstanding his 'traversing the same ground with Mr. Dana, posses- 

 sed of equal facilities for observing the phenomena presented by corals, 

 with the same facts presented to his notice,'* he had not figures of more 

 than a dozen species of corals, on reaching the Sandwich Islands. The 

 contents of my portfolio have already been alluded to; there were col- 

 ored drawings of the animals of more than a hundred species, and 

 more than a score of written sheets were occupied with my geological 

 observations. I had seen Mr. C.'s drawings, but had never given his 

 geological investigations on corals a thought. His journal to the Samoa 

 group contains almost nothing on this subject. Farther words are un- 

 necessary. 



The reef referred to off Tutuila, was often described to me by Mr. 

 Couthouy while at sea, its position pointed out, and the supposed fact of 

 its being covered with coral in thirteen fathoms dwelt upon. The ship 

 obtained a cast of the lead in thirteen fathoms on the edge of the reef, 

 and as it was small, was just leaving it, when the lead was dropped again 

 to the same depth. It was afterwards sounded by the boats and found 

 to be covered with four and a half to six fathoms of water. 



The second foot-note to page 5, renders any remarks on the charge to 

 which it refers, quite unnecessary. 



The second paragraph on page 6 will be found sufficiently refuted by 

 recurring to the pages he has there referred to. 



It is still true that Mr. C. was with the squadron but a year and a half. 

 He left it at Sydney, New South Wales, and went by a private opportu- 

 nity to the Sandwich Islands, and was not with us during the summer of 

 1840, at the Feejee group, the richest coral region met with in the Pa- 

 cific. Only sixteen months had elapsed since our departure, when we 

 left Samoa, where his " duplicate minutes" ceased. f 



As to the mutilation of the journal : — while examining it, I prudently 

 counted leaves and pages : from the Paumotus to Samoa nothing was 

 missing. The seals opened, were broken in the presence of witnesses 



* See Mr. C.'s reply, p. 379, Vol. xlv, of this Journal, 

 t See this Journal, Vol. xlv, p. 380. 



