engraving and text extracted from 
History of Madeira - 1821 (from my library)
Madeira was then under British domination
                 Twine-carrier
                  An accident on the road
                
 As the characteristic circumstance  displayed in the plate admits of an humorous idea, an humorous title has been  given to it, but altogether consistent with the natural habits of the peasants  employed in the office of Wine-carriers. When the grapes have been duly  pressed, the wine is carried by peasants, as represented in the plate, in goatskins,  to a store, where it is emptied into suitable vats, or vessels, for the process  of fermentation. Such is the fatigue occasioned by the inequalities of the  road, and the usual heat of the season, that these carriers are sometimes  tempted to refresh and sustain themselves, by taking certain liberties with  their loads, which extreme thirst suggests, and favourable opportunities  encourage. Sometimes a goat's skin  may  burst from unavoidable accidents, which give a right to the overflowing juice ;  but, under very pressing circumstances of thirst and weariness, it may so  happen, that an artificial accident is contrived to relieve them. The wine in  this state acts as an enlivener and restorative without any subsequent stupor.
This  plate gives so distinct a view of the dress of these people, that a description  of it will not find a more suitable place than on this page. Its form is  correctly represented by the pencil ; and it only remains for the pen to add,  that it consists of a kind of linen cloth, manufactured by  the women. It is at once light, and of a close texture, so that it is equally  calculated for the different seasons, and possesses a firmness of fabric that  promises a peculiar length of wear and tear. Their heads are covered with a  cloth cap verging to a point; while their hair hangs in long ringlets down  their backs. They wear round their necks a ribbon, which answers in its length  to the measurement of the figure of their patron saint. To this personal decoration  they attach the character of a religious talisman.
Whether it were a froward thrust
  That compels the skin to burst,
  Urg’d by the bearer’s daring thirst
  Or whether he his throat is filling
  To save the precious juice from spilling,
  And that this native spring of mirth,
  Should not be cast on barren earth
  Can, ’tis presum’d, be only known
  To that same pleasant thought alone,
  Which, tender of the flowing wine,
  Display’d the humorous design.
  But, whatsoe’er the truth may be,
  A gen’rous, kind philosophy
  Will not the welcome bev’rage grudge
  To the poor, thirsty, swelt’ring drudge,
  Who, as his weary way he saunters,
  The goat’s-skin in his lips decanters,
  To give him spirits on his way,
  And make his future journey gay.
  While we view the bleeding skin,
  And see him suck the juice within.
  ’Tis a hard heart who here would blame :
  Nine out of ten would do the same.
 
The costumes :
  This engraving gives a very accurate view of the dress of this people, that a description of it will find no more appropriate place than on this page. Its form is correctly represented by the pencil; and it only remains for the pen to add, that it is a kind of linen cloth, made by the women. It is both light and tightly textured, so that it is also designed for the different seasons, and has a firmness of fabric which promises a particular length of wear. Their heads are covered with a cloth cap that ends in a point, while their hair hangs in long curls down their backs. They wear a ribbon around their necks, the length of which corresponds to the size of the figure of their patron saint. To this personal decoration they attach the character of a religious talisman (original text).
  To this must be added the walking stick for stony paths and soft leather boots. It should be noted that if the linen clothes are without decoration, it is not the same for the bonnets with a red border. 
  ... In all of these engravings, the workers and farmers are mostly dressed in crisp white cloth. Given their work on the roads and in the fields, we can assume that the actual colour was rather greyish... ?