40 
MEMOIR OF 
22. Of the progressive scale of animals, rising 
through many gradations from those most imper- 
fectly organized to man. 
The second volume was published by his son, 
the present Mr Alexander Smellie, in 1799, four 
years after his father’s death. It comprises nine 
chapters, and had been entirely completed, ready 
for the press. 
Chap. 1. Gives a concise view of the utility 
of method or arrangement in every department 
of science, and points out methodical arrange- 
ment into tribes and families, or what are usually 
called orders and genera, as being evidently 
founded in nature, both in the animal and veget- 
able kingdoms. To this he has appended a 
concise, historical, and characteristic account of 
the writings and arrangements of the principal 
ancient and modern naturalists, beginning with 
Aristotle and ending with Pennant. 
2. On the multiplication and construction of 
the species ; and the theories of various authors, 
ancient and modern, are explained and com- 
mented on. 
3. Of mules, or the anomalous productions of 
nature. 
4. Of the varieties of man in different regions 
of the globe ; and of the varieties in manners and 
customs, religion, war, agriculture, marriages, 
burials, government, arts, manufactures, &c. of 
the different nations of the world. 
