The Negroes have little invention, but strong powers of imitation, so that they readily acquire mechanic arts. They have a great talent for music, and all their external senses are remarkably acute.

He wrote Geological Observations in 1828 and both Synopsis of the Organic Remains of the Cretaceous Group of the United States and Illustrations of Pulmonary Consumption in 1834. Samuel George Morton (1799–1851) was an American physician and natural scientist. His bibliography includes Hybridity in Animals and Plants (1847) Additional Observation on Hybridity (1851) and An Illustrated System of Human Anatomy (1849).