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

"A Guide for the Dissection of the Dogfish (Squalus Acanthias)" by Lawrence Edmonds Griffin is an early 20th-century instruction manual designed for students and teachers studying comparative anatomy. It details how to dissect dogfish sharks in order to understand their internal structure. It begins by introducing Squalus acanthias examining the criteria for choosing appropriate dissection specimens before thoroughly describing the dogfish's external anatomy, covering size differences, male and female variations, and the specific features that merit close inspection. The writer highlights paying attention to these aspects, stressing their importance not just for learning comparative anatomy but also for embryology, setting the stage for exploring the dogfish's inner organs and skeletal structure.