Which sentences contribute to the overall eerie mood of this excerpt from “the cask of amontillado” by edgar allan poe?
the wine sparkled in his eyes and the bells jingled. {my own fancy grew warm with the medoc.}{ we had passed through long walls of piled skeletons, with casks and puncheons intermingling, into the inmost recesses of the catacombs}. i paused again, and this time i made bold to seize fortunato by an arm above the elbow.

"the nitre! " i said; "see, it increases. it hangs like moss upon the vaults. we are below the river's bed. {the drops of moisture trickle among the bones. }{come, we will go back ere it is too late. your cough --"}

{"it is nothing," he said; "let us go on. but first, another draught of the medoc."}

{i broke and reached him a flagon of de grave. he emptied it at a breath. }his eyes flashed with a fierce light. he laughed and threw the bottle upwards with a gesticulation i did not understand.

i looked at him in surprise. he repeated the movement --a grotesque one.