Bacteria / Especially as they are related to the economy of nature, to industrial processes, and to the public health

The author offers a non-technical survey of bacterial biology and practical applications, beginning with morphology, cultivation techniques, and laboratory methods, then examining bacteria in water and air, their roles in fermentation and soil processes, and their presence in milk and other foods. Later chapters discuss immunity, antitoxins, and the relation between bacteria and disease, concluding with approaches to disinfection. Throughout, the text connects microbial activity to industrial processes, natural cycles, and public health, using diagrams and micrographs to explain how microscopic organisms influence environment, food safety, sanitation, and disease control.