One of nineteen specimens illustrating the manufacture of chunam or shell lime plaster in Madras - a sample of calcined and powdered shells

One of nineteen specimens illustrating the manufacture of chunam or shell lime plaster in Madras - a sample of river sand

One of nineteen specimens illustrating the manufacture of chunam or shell lime plaster in Madras - a sample of white sand for second and third coats

One of nineteen specimens illustrating the manufacture of chunam or shell lime plaster in Madras - a sample of ballapum or soapstone

One of nineteen specimens illustrating the manufacture of chunam or shell lime plaster in Madras - a sample of ballapum or soapstone powder, for sprinkling during polishing