A darkish liquid ejected for defense by most cephalopods, including the octopus and squid. Ink is made up of really concentrated melanin. The Chinese invented inksticks and inkstones to refine soot and animal glue into crafting products. Additionally they experimented with plant-primarily based dyes like indigo and safflower for https://inkdrawingforbeginners54421.blognody.com/40539886/not-known-facts-about-ink-pen-drawing-techniques