A Guide for the Dissection of the Dogfish (Squalus Acanthias)

"A Guide for the Dissection of the Dogfish (Squalus Acanthias)" by Lawrence E. Griffin is a scientific publication written in the early 20th century. The guide serves as a detailed manual for students and educators engaged in comparative anatomy, specifically focusing on the anatomical dissection of dogfish, a type of small shark frequently used in laboratory settings. The text outlines various procedures and techniques essential for understanding the structural intricacies of elasmobranchs. The opening of the guide introduces the species Squalus acanthias and offers essential considerations for purchasing specimens suitable for dissection. It provides a detailed description of the dog's external anatomy, including variations in size, sexual dimorphism, and the specific structures to be examined. The author emphasizes the importance of observing these structures for a thorough understanding of comparative anatomy and embryology, laying the groundwork for subsequent sections that delve deeper into the visceral and skeletal systems of the dogfish.