“Such as in Ships”

Such as in Ships and brittle Barks
  Into the Seas descend
Shall learn how wholly on those Arks
  Our Victuals do depend.
For, when a Man would bite or sup,
  Or buy him Goods or Gear,
He needs must call the Oceans up,
  And move an Hemisphere.

Consider, now, that Indian Weed
  Which groweth o’er the Main,
With Teas and Cottons for our Need,
  And Sugar of the Cane—
Their Comings We no more regard
  Than daily Corn or Oil:
Yet, when Men waft Them Englandward,
  How infinite the Toil!

Nation and People harvesteth
  The tropique Lands among,
And Engines of tumultuous Breath
  Do draw the Yield along—
Yea, even as by Hecatombs
  Which, presently struck down
Into our Navies’ labouring Wombs
  Make Pennyworths in Town.