3 J Sketch of the Geography of Cochin China. 



home and that on board the (liip have in the interim vi- 

 brated. I fay then, 



1. That the concordance (although exaft) of two chrono- 

 meters, after a voyage on the part of one of them, is no proof 

 of their accuracy. • 



2. That this concordance will depend on the nature of the 

 voyage that has been performed in the interim. And, 



3. l"hat we muft not expert an exa6l inftrument till the 

 cxpanfions by heat, and the varying denfity of the atmo- 

 fphere, arc counteracSed in the fame machine. 



For although the difference of an inch barometrical pref- 

 fure may not caufe an obftruction in the arc of vibration 

 equal to the two millionth part of the whole, yet this fmall 

 difference (which, perhaps, may have prevented its hitherto 

 due obfcrvance,) will, in the fpace of fome months, amount 

 to fomethiug confiderable, efpccially as a variation of not only 

 one, but two or even three inches increafe or diminution of 

 prciTure will frequently enfue in Icfs than 34 hours. 



Kenniiigtini, 

 Jaouarj 17, 1S03. 



VI. A Shetch of the Geography of Cochin China ; fome Par~ 

 ticulars relative to the Manners, Cujioms, and Hijlory of 

 the Inhahitants ; and a feiu Conjiderations on the Import- 

 ance of forming an Eflahlijhment in that Country *. 



V-«OCHIN CHINA, called by the natives Annm, extends 

 from about the 20th degree of north latitude to Pulo Con- 

 dore, which lies in 8 40'. It is bounded by the kingdom 

 of Tonquin on the north, from which it is feparated by the 

 river Sungen ; by the kingdom of Laos, and by a range of 

 mountains, whicli divides it from Cambodia, on the weft; 

 and by that part of the Eaftern Ocean generally called the 

 China Sea, on the fouth and eaft. 



The kingdom is divided into twelve provinces, all lying 

 upon the fea- coaft, and fuccceding each other from north to 

 foufh in the following order: 



Ding-oie, Cong-bing, Ding-cat, Hue (or the Courl), in 

 the poffeffion of the Tonquinefe. Cham, (ong^-nai, Quinion, 

 in the poffeffion of Ignaack. Phu-yen, Bing-khang, Nah- 

 tong, Bing-thoam (or Champa), dubious whether fubdued by 

 Ignaack, or ftill m the poffeffion of the king. Doriai, in the 

 po'Jeflion of the king. 



^ From the AJiatic Annual Revificr fr 1801. 



The 



