Echvard Drinker Cope. — Ki)ig. 33 
586. Synopsis of the Vertebrate Fauna of the Puerco Series. Trans. 
Amer. Philos. Soc. (N. S.) Vol. XVI. 
587. The Artiodactyla. Amer. Nat. Vol. XXII. 
588. The Marriage Problem. Pts. I and II. Open Court, Chi- 
cago. Vol. II. 
589. The Mechanical Causes of the Origin of the Dentition of the 
Rodentia. Amer. Nat. Vol. XXII. 
590. The Multituberculata Monotremes. Amer. Nat. Vol. XXII. 
591. The Ossicula Auditus of the Batrachia. Amer. Nat. Vol. 
XXII. 
592. The Phylogeny of the Horse. Amer. Nat. Vol. XXII. 
593. The Pineal Eye in Extinct Vertebrates. Amer. Nat. Vol. 
XXII. 
594. The Relation of the Sexes to Government. Popular Science 
Monthly. Vol. XXXIII. 
595. The Relation of Will to the Conservation of Energy. Amer. 
Nat. Vol. XXII. 
596. The Theism of Evolution. Amer. Nat. Vol. XXII. 
597. The Vertebrate Fauna of the Puerco Epoch. Amer. Nat. Vol. 
XXII. 
598. Topinard on the Latest Steps in the Genealogy of Man. 
Amer. Nat. Vol. XXII. 
1889. 
599. An Outline of the Philosophy of Evolution. Proc. Amer. 
Philos. Soc. Vol. XXVI. 
600. A Review of the North American Species of Hippotherium. 
Proc. Amer. Philos. Soc. Vol XXVI. 
601. Brogniart and Doderlein on Xenacanthina. Amer. Nat. Vol. 
XXIII. 
602. Credner on Palasohatteria. Amer. Nat. Vol. XXIII. 
603. Ethical Evolution. Open Court, Chicago. Vol. III. 
604. Lamarck versus Weismann. Nature. Vol. XLI. 
605. Lydekker on Phenacodus and the Athecae. Nature. Vol. XL. 
606. Marsh on Cretaceous Mammalia. Amer. Nat. Vol. XXIII. 
607. Notes on the Dinosauria of the Laramie. Amer. Nat. \o\. 
XXIII. 
608. On a New Genus of Triassic Dinosauria. Amer. Nat. Vol. 
XXIII. 
609. On a Species of Plioplarchus from Oregon. Amer. Nat. Vol. 
XXIII. 
610. On Inheritance in Evolution. Amer. Nat. Vol. XXIII. 
611. On the Mammalia Obtained by the Naturalist Exploring Ex 
pedition to Southern Brazil. Amer. Nat. Vol. XXIII. 
612. Pohligon Elephas Antiquus. Amer. Nat. Vol. XXIII. 
613. Review of Dr. Lydekker's Catalogue of Fossil Reptilia and 
Bactrachia of the British Museum. .\mer. Nat. Vol. XXIII. 
614. Storms on the Adhesive Disk of Echincis. Amer. Nat. Vol. 
XXIII. 
