(1) The Natural History of the Farm: A Guide to the Practical Study of the Sources of Our Living in Wild Nature (2) Investigation into the Disease of Sheep called “Scrapie” (Traberkrankheit; La Tremblante): With Especial Reference to its Association with Sarcosporidiosis (3) Die Typen der Bodenbildung, ihre Klassifikation und geographische Verbreitung