Chapter I: Sloths

The South American Forests--Discovery of the Sloth--How it
derived its Name--Peculiarities of Dentition--Food--Fore
Limbs and Fingers--Hind Limbs and Heel--Other
Modifications of Structure--Kinds of Sloth--Waterton’s
Captive Sloth--Habits of the Animal--Burchell’s Tame
Sloths--Manner of Climbing Trees--Disposition--Activity among
Trees--Naturalists’ Debate about Anatomy--Probable Conclusion
regarding it--Skeleton--Vertebræ--the Rudimentary Tail--Most
Distinctive Skeletal Characters--Arm, Wrist, Hand, Fingers,
Claws--Mode of Walking--Great Utility of the Claws--Face of
Sloth--Skull--Teeth--Classification--_TARDIGRADA_--BRADIPODIDÆ--Genus
BRADYPUS--Characteristics--Genus
ARCTOPITHECUS--Characteristics--CHOLŒPODIDÆ--THE COLLARED
SLOTH--Description--Skull Bones--Habits--Circulation of the
Blood--_Rete Mirabile_--THE AI--THE UNAU--Appearance--Skull
and Teeth--Skeleton--Interesting Anatomical
Features--Stomach--HOFFMANN’S SLOTH--Description--Habits 158