A dim liquid ejected for defense by most cephalopods, such as the octopus and squid. Ink includes highly concentrated melanin. The Chinese invented inksticks and inkstones to refine soot and animal glue into producing supplies. Additionally they experimented with plant-based dyes like indigo and safflower for pigment-primarily based ink. https://alexisrjaod.jts-blog.com/35495975/top-latest-five-ink-drawing-for-beginners-urban-news