“As he sauntered along a spark of some intuition suddenly set him ablaze. He was fired with a desire to burst out from the shadow of silence and obscurity in which he lay enshrouded.” pg. 95. Anand, Mulk Raj. Untouchable. London: Penguin Group, 1940. Print.
“But there was a smouldering rage in his soul.” pg. 51.
“Quickly it flared up, suddenly illuminating the furnace with its leaping red,’ gold and black flames, an angry consuming power, something apart, something detached from the heaps of straw it fed on.” pg 21.
Fire. The last quote describes the furnace that Bakha puts the latrine refuse in to get rid of it. The first two quotes describe a fire inside of Bakha, one that rages and dies down throughout his day as he deals with endless discrimination. I think it is a perfect metaphor. Bakha has reached an age where the caste system and his fate are being illuminated for him.