Whole grains have a lot of 'woody' (for want of a better description) fibre in their seed coat which help regulates bowel activity. What is less well known is that many also contain soluble fibre, which also has positive health benefits. The soluble and insoluble fiber in seeds is known to be helpful in preventing constipation and diseases of the digestive tract such as diverticulitis. It is also suspected that fiber may have a protective effect against colon cancer. Oats contain quite high amounts of soluble fiber, as does barley, and to a lesser extent, wheat. Legumes high in soluble fiber are lentils, pinto beans, and black beans. Legumes are also an excellent source of insoluble fiber. The fiber content of legumes slows the digestion of their carbohydrates content, regulating blood sugar levels.
In this sense, the river(s) become a metaphor for the sad history of the African-American race. We see the poet/Negro race standing proudly, looking at its achievements by the Euphrates, the Congo and the Nile, and then we know what the singing alongside the Mississippi is: the song of slaves. But Hughes is hopeful, Abe Lincoln has gone down to New Orleans , and slavery is over. One familiar with Lincoln’s biography will know that Lincoln took a flatboat from Illinois to New Orleans as a young man, and saw the horrors of slavery firsthand. As President, Abraham Lincoln’s armies sought control of the entire Mississippi river to cut the Confederacy in two, and strangle the home of slavery. The muddy bosom of the Mississippi is golden with potential for the future.