The Indus Civilization (Cambridge History of India, Supplementary Volume) c10.32

c10.32

It may here be added that on and about the site of these coolie-lines, but at higher levels, sixteen furnaces were found, mostly pear-shaped on plan and with major axes from 3 ft. 4 ins. to 6 ft. 2 ins. in length. The fuel used had been partly cow-dung and partly charcoal, and the heat, induced doubtless by bellows similar to those used in the countryside to-day, had been such as to produce intense vitrification of the brick lining. The precise function of these furnaces is doubtful, but a crucible used for melting bronze was found in the vicinity.¹