[128] Wool, hides and leather formed the bulk of the early exports from England. Wine was the principal import. It was on these articles of merchandise, and such others as the merchants brought in and took out, that duties had been charged since early times. The taxes had become customary and were spoken of as “consuetudines,” or customs. The basis for the exaction was the understanding that the merchants, most of them foreigners, should be given protection by the king. The early prisage on wine amounted to one cask from every cargo of from ten to twenty casks, arriving at a port of England. From ships carrying more than twenty casks, two casks were exacted. Sometimes the duty instead of being made in wine was compounded for in money. The amount of the export tax on wool in the beginning is not known. In merchandise of other sorts, the payment amounted to a tenth or a fifteenth of the value of the goods. Magna Carta abolished illegal exactions on goods retaining only the “ancient and lawful customs” above mentioned. Taxable commodities were wine, wool, and general merchandise. In many instances, in spite of the prohibitions in the Charter, the customs amounted to confiscation. Until the time of Edward I there was unending irregularity in the management of the customs. Merchant strangers, by Cap. 41 of the Great Charter were to have “safe and secure exit from England, and entry to England ... buying and selling by the ancient and right customs, quit from all evil Tolls.” [129] “Edwardus Dei Gratia Rex Angliæ dominus Hiberniæ et dux Aquitanniæ vicecomiti Kanciæ salutem. Cum prælatis et magnatibus regni nostri mandaverimus ut ipsi parliamento nostro, quod apud Westmonasterium in quindena Sancti Michælis proxime futura tenebimus. Domino concedenti intersint ad tractandum nobiscum tam super statum regni nostri quam super quibusdam negotiis nostris quæ eis exponemus ibidem, et expediens sit quod duo milites de comitatu prædicto de discretioribus et legalioribus militibus ejusdem comitatus intersint eidem parliamento, ex causis prædictis tibi præcipimus quod in pleno comitatu tuo de assensu ejusdem comitatus eligi facias dictos duos militis et eos ad nos usque Westmonasterium pro communitate dicti comitatus venire facias ad dictum diem ad tractandum nobiscum et cum prædictis prælatis et magnatibus super negotiis prædictis. Et hoc non omittas....” 2 Stubbs, _Const. Hist. Eng._ 234, note 5. [130] 1 _Rotuli Parliamentorum_, 224. [131] _Ann._ T. Wykes, 274; Stubbs, _Sel. Chart._ 431. [132] The statute of Gloucester, passed in 1278, provided for the regulation of territorial franchises. In accordance with it, the itinerant justices were to inquire by what warrant certain franchises were held, and the writ “quo warranto” was issued in each case. Stubbs, 2 _Const. Hist. Eng._ 114-115. [133] Writ for distraint of knighthood. 1 Stubbs, _Sel. Chart._ 457. [134] Letter of credence for a royal commissioner to raise an aid. Stubbs, _Sel. Chart._ 464.