Take a trip to Skull Island in Book 4 and get to know the bones of the head, face, and neck. Dr. Bonyfide makes a hilarious friend in Seymour Seagull, with Lady Lacrima, Maxilla Gorilla, Oliver Ossicle, and Occipital Ox rounding out the crew. Completion of this fourth and final book in our skeletal series means that special congratulations are in order – the entire skeletal system has been learned. Our books inspire self-confidence from the inside out.