Originally published in 1927, this book examines the composition and function of the heart in a range of animals. Clark examines how the function of the heart differs between members of the same species who are not of the same size and the differences in heart structure between cold- and warm-blooded animals.

Edited by R.H. Andrews.

Witness Eternia as you’ve never seen it before! This exciting tome brings you an all new look at the newest incarnation of Masters of the Universe, bringing an exciting sci-fi twist to the classic series. Featuring a behind the scenes look at all of He-Man’s allies, the evil minions of Skeletor, and the strange and alien landscapes, creatures, technology of Eternia! In addition, this volume showcases the creation process of all aspects of this show with never-before-seen material. Dark Horse Books and Mattel proudly present: The Art of He-Man and the Masters of the Universe! A welcome addition to the collection of any Masters of the Universe fan!