In 'Parasites: A Treatise on the Entozoa of Man and Animals. Including Some Account of the Ectozoa' by T. Spencer Cobbold, readers are taken on a comprehensive exploration of parasitic organisms that infest both humans and animals. The book presents a detailed study of various types of parasites, their life cycles, and the impact they have on their hosts. Cobbold's writing style is scientific and informative, providing a scholarly approach to the subject matter. Published in the 1800s, this book serves as a crucial historical document in the field of parasitology and offers valuable insights into the understanding of these organisms. Cobbold's meticulous research and detailed descriptions make this book a valuable resource for students and researchers interested in parasitology. By delving into the intricacies of parasitic organisms, Cobbold sheds light on a topic that is often overlooked in the scientific community. 'Parasites' is a must-read for anyone looking to expand their knowledge of these fascinating and often misunderstood organisms.