A dark liquid ejected for protection by most cephalopods, including the octopus and squid. Ink is made up of extremely concentrated melanin. The Chinese invented inksticks and inkstones to refine soot and animal glue into creating supplies. Additionally they experimented with plant-dependent dyes like indigo and safflower for pigment-based https://ink-drawing-for-beginners82470.blognody.com/40545041/top-latest-five-ink-drawing-for-beginners-urban-news