Chap。XVI
IllustrationofsomePrincipleslaiddownintheformerChapter，relativetotheAdvancementandSupportofforeignTradeIamnowtogiveanillustrationofsomethingsrelatingtothatspeciesoftradewhichiscarriedonwithothernations，laiddown，Ithink，intoogeneraltermsintheformerchapter。
Ihaveconstantlyinviewtoseparateanddistinguishtheprinciplesofforeigntrade，fromthosewhichinfluencetheadvancementofaninlandcommerce，andabriskcirculationonly；
operationswhichproduceverydifferenteffects，equallymeritingtheattentionofastatesman。
Theveryexistenceofforeigntrade，impliesaseparateinterestbetweenthosenationswhoarefoundontheoppositesidesofthemercantilecontract，namelythebuyersandthesellers，asbothendeavourtomakethehestbargainpossibleforthemselves。Thesetransactionsimplyamutualdependenceupononeanother，whichmayeitherbenecessaryorcontingent。Itisnecessary，whenoneofthenationscannotsubsistwithouttheassistanceoftheother，asisthecasebetweentheprovinceofHolland，andthosecountrieswhichsupplyitwithgrain；orcontingent，whenthewantsofaparticularnationcannotbesuppliedbytheirowninhabitants，fromawantofskillanddexterity，only。