Bile salts give stool its characteristic brown color. If there is decreased bile flow caused by a condition affecting your gallbladder, liver, or pancreas (such as cholecystitis, gallstones, giardia, hepatitis, chronic pancreatitis, or cirrhosis), there may be a lack of bile in stool, making them pale or clay colored.
The writer uses irony in the passage with the sense of purposes to it. This purposes includes, criticizing the adults, to sympathize the children and also to create a tragic situation in the passage. Firstly, the writer uses the technique irony to criticize the adult.
The irony of the death of Icarus, who has always been an emblem for the poet's upward flight that ends in tragedy, is that his death goes unnoticed in the spring--a mere splash in the sea. The fear of all poets--that their passing will go quite unnoticed--is an old and pervasive theme. That Williams reiterates the theme is significant in the life of a poet who always felt the world had never fully recognized his accomplishments.