31.   Foreign currency is not traded in a physical market-place.

32.   For example, the costs involved in trading in futures and options in the USA for a UK resident are higher than the costs involved for a US resident.

33.   This uncertainty is prone to be interpreted as woolliness by parents who prefer to trade in certitude.

34.   Stan now trades in fossils from many countries.

35.   Shares in public companies are traded in the Stock Exchange.

36.   Debentures can be traded in the same way as shares.

37.   And there must have been a hundred copies of a pamphlet on the campaign against street trading in animals.

38.   Trading in things is the secondary consequence of trading in song.

39.   To be successful, a futures contract must have a liquid market with low transactions costs associated with trading in the contract.

40.   These individuals, known as locals, are vital for the liquidity of the markets in the contracts traded in the pits.