Contents: Protozoan Culture, Culture of Sponges, Origin of Life, Culture of Planaria, Culture of Annelids, A Culture of Daphnia, Shrimp Culture, Lobster Culture, Culture of Crayfish, Techniques of Oyster Culture, Culture of the Indian Carps, Culture of Catfishes Native to Australasia and Europe, Frog Culture, Culture of Tilapia, Culture of True Eels (Anguilla Spp.), Commercial Culture of Freshwater Salmonids.