Answer:
“Dave refused to run quietly on the trail behind the sled, where the going was easy, but continued to flounder alongside in the soft snow, where the going was most difficult, till exhausted.”
Answer: You probably answered already but for anyone else who needs it
"I'll make a ghost of him" - I'll kill him
"Your bait of falsehood takes this carp of truth" - You lie so you can find out the truth
"These words like daggers enter in mine" - These words are painful to hear
"The natural gates and alleys of the body" - veins and arteries