The burthen of his remarks was the old scare that the world's food supply will some day fall far short of its population.
Most of those views, like his language"marplot," "whilst," "burthen," "blatherskite," "milch cows" have a 19th century texture.
May we all remember that it can only be preserved by respecting the rights of the States and distributing equally the benefit and the burthen of the Union.