“The Dillingham had been flung to the breeze during a former period of prosperity when its possessor was being paid $30 per week. Now, when the income was shrunk to $20, though, they were thinking seriously of contracting to a modest and unassuming D. But whenever Mr. James Dillingham Young came home and reached his flat above he was called 'Jim’ and greatly hugged by Mrs. James Dillingham Young, already introduced to you as Della. Which is all very good." What is the effect of the description within the excerpt above?