Coll, Colley, Coally and Coaly. It consists of bioturbated glauconitic sandstones, siltstones and conglomerates with coaly mudstone and minor tuffite. In Scotland, this dog was referred to as "cooley", "coaly" and "colley" dogs. Orrec also develops a bond with Coaly, a guide dog trained for him by Gry. Old Coaly was very well liked by the students and became somewhat of a mascot. Coaly is thrown against the firebox, severely burning his back. In the 1904 scheme of Brezina, today's CM chondrites would be "K" ("coaly chondrites").