Darkness 12-20

A: PG13: chap; the huts gaped black, rotting, all askew within the fallen enclosures
PG14: I arrived in a city that always makes me think of a whited sepulchre; knitting black wool; I was oging into the yellow; From behind tht strucutre came out an impression of pale plumpness in a frock-coat;
PG15: in the oute room the two women knitted black wool feverishly
PG16: silver-rimed spectacles hung on the tip of her nose
PG17: Ever any madness in your family?
PG19: there it is before you-smiling, frowning, inviting, grand, mean, insipid, or savage
PG20: colossal jungle, so dark-green as to be almost black; the voice of the surf heard now and then was a postivie pleasure, like the speech of a brother

I: in the novel "heart of darkness" the author shows that the nature the "hut" is bad and black, wrong and symbolizes evilness but it also infers that the protagonist goes to the city and its taking about how it reminds him of "whited sepulchre" what is that suppose to mean?? also he realizes that the women working in there is "knitting BLACK wool" which seems awkward and mentions black wool for few pages. Isn't that a quincidince?!?