what can you tell me about his style of writing?
A scholar of linguistics, He presents a heavily ungrammatical phonetic spelling of the Yankee dialect, a method called eye dialect.
James Russell Lowell
A scholar of linguistics, Lowell was one of the founders of the American Dialect Society. He used this interest in his writing, particularly in "The Biglow Papers", presenting a heavily ungrammatical phonetic spelling of the Yankee dialect, a method called eye dialect. In using this vernacular, Lowell intended to get closer to the common man's experience and was rebelling against more formal and, as he thought, unnatural representations of Americans in literature. As he wrote in his introduction to "The Biglow Papers", "few American writers or speakers wield their native language with the directness, precision, and force that are common as the day in the mother country". Though intentionally humorous, this accurate presentation of the dialect was pioneering work in American literature. For example, Lowell's character Hosea Biglow says in verse:

Lowell is considered one of the Fireside Poets, a group of writers from New England in the 1840s who all had a substantial national following 
writer of the inventor who kept his promise James Russell Lowel. who is he? He was an American Romantic poet, critic, editor, and diplomat. where was he born? Cambridge, Massachusetts. can you name some of his works? His interest were the literary world. He wrote poems or a prose article, He wrote a series on "Anti-Slavery in the United States" for the "Daily News", published "The Biglow Papers", later named by the Grolier Club as the most influential book of 1848.
wiki:11704884
James Russell Lowell [SEP] Writing style and literary theory
Early in his career, James Russell Lowell's writing was influenced by Swedenborgianism, a Spiritualism-infused form of Christianity founded by Emanuel Swedenborg, causing Frances Longfellow (wife of the poet Henry Wadsworth Longfellow) to mention that "he has been long in the habit of seeing spirits". He composed his poetry rapidly when inspired by an "inner light" but could not write to order. He subscribed to the common nineteenth-century belief that the poet was a prophet but went further, linking religion, nature, and poetry, as well as social reform. Evert Augustus Duyckinck and others welcomed Lowell as part of Young America, a New York-based movement.