Possible Clues:

• Body feature of a mammoth
• Camel's back feature
• Raised mass; carry
• What 22 across has at the back
• Most of pouffe on the back
• Camel part
• Sing so softly to oneself when one is on the camel
• Feature of camel
• Protuberance; (the) sulks
• 'That tune fairly gives me the -' (Howards End)