Ian Hubbert finally uploaded the first episode of his "Dynamo Dream" series, made with #blender
C. P. McCord and F. P. Allen (J. Exp. Zool. 23, 207–224; 1917) reported that a crude acetone extract of bovine pineal glands fed to Rana pipiens tadpoles caused such a pronounced lightening of their skins that the larger viscera were visible through the dorsal body wall. The tadpoles' transparency varied according to the concentration of pineal extract in the water in which they were swimming.