Huck enjoys living in nature.  He has never liked the strict social rule, and he disliked it when Miss Watson and Widow Douglas tried to civilize him.  Although he is content living by himself near the river, he also misses people.  Huck is really happy when he gets to see Jim even though it startles him that Jim ran away from Miss Watson.  Huck's defiance of social norms when he doesn't turn Jim in also illustrate Huck's lack of caring for society and its rules.  Huck likes not having to deal with rules and society.
 
The pun in the sentence is that they slept like dead people.  The irony in it is that everyone thinks 
 
Huck stops to try to save the murderers because he feels bad for them.  He thinks that there is a possibility that he could have been a murderer, and he wouldn't want to be stuck on a wrecked steamboat.  This shows that Huck is very capable of empathy towards others.  He can see people that are in the worst walks of life and picture himself there, and then conduct himself according to how he would like to be treated.  It also shows that Huck has a slightly warped moral judgement.  He is willing to do anything to keep himself alive, but when he looks back at things he did that is when he feels bad.  It also emphasizes his youth again and his lack of a look before you leap attitude.  
 
This action shows us about Huck's persistence, lack of good judgement, and feeling of invincibility.  It emphasizes Huck's youth.  Most teenage boys feel the same way Huck does.  They believe that they can't be hurt, and it leads them to do stupid things.  Huck wants to go on crazy adventures, and he doesn't care how dangerous the adventures are.  Huck's insistence on boarding the wrecked steamboat emphasize his 
 
I think that Mrs. Loftus is a genuinely kind and caring old woman who takes it upon herself to protect this poor boy. Mrs. Loftus thinks that Huck is a runaway apprentice, and I think that she sympathizes that he wants his own life rather than what he is being forced to  do.  Mrs.  Loftus doesn't want Huck to be punished harshly, and she even tells Huck that if he gets in trouble he can contact her.  This helps to support the kindness of Mrs. Loftus' character.
 
The fact that finding Jim is worth more money than finding Pap is a reflection on the values of southern society during the time.  To people in the south finding a runaway slave more important than finding a man who may be a murderer.  Jim may be innocent of anything except for wanting to have his own life, but he is more "dangerous" to the south than Pap who actually killed his own son. 
 
Huck doesn't really believe in superstition at the beginning of chapter ten.  Over the course of the chapter, Jim's superstitious beliefs start to become true more and more often.  Jim predicts that there will be a storm, and there is a huge storm that floods the river.  In another instance Jim says that touching a snakeskin is bad luck, and later that night a rattlesnake bites Jim's leg.  Due to these things that happened out of chance, and Jim's persistence in his beliefs of superstitions, Huck
 
Huck escapes the cabin by sawing a hole in the wall and then taking all the food as well as anything else useful from the house and hiding it in a canoe he had found earlier.  While Huck's father is gone, Huck shoots a pig and spreads the blood around the house.  Then Huck uses an axe to put a hole in the door. Huck made it look like robbers broke into the house and that Huck was murdered.  Huck goes back to his canoe and paddles down the river to a small island where he hides.  This tells us that Huck is a very smart character.  He was creative enough to come up with an elaborate plan, as well as smart enough to set it up so it looked realistic.  The fact that he ran away and made it look like murder also tells us that Huck few bonds where he lived before.  He had friends and people that cared about him, but he ran away from all of them and let them think that he was dead.
 
Jim ran away after he heard Miss Watson talking about selling him for 800 dollars.  Jim didn't wait to see if she actually was going to sell him, but he ran away so he wouldn't have to go to New Orleans.  Jim was afraid that he would have to leave everyone he knew and cared about behind. Jim ran to an island where he eventually found Huck.  Jim seemed to be afraid but not regretful of running away.  Jim has to worry about the rough punishment that is instilled on run away sla
 
This literary device separates Huck and Mark Twain.  By making the chapter titles in third person Twain is disassociating himself from the story.  Twain acknowledges that the story is a fictional work and not an autobiography.  The difference from chapter titles to text refute the argument that Huck and Twain are the same person.