PART I11. 
o——-— 
PHYSICAL GEOGRAPHY. 
In geography there are discussed several matters pertain- 
ing to different categories: mathematical, physical, and 
political. To the first-menticned category belong questions 
relative to the earth as part of the solar system. To the 
last-mentioned belong questions relative to the human 
population in their relations as subjects of different king- 
doms, or citizens of different-states. Under the head of 
physical geography are discussed questions relative to the 
geological formation; the contour of divisions of a country, 
more or less extensive; the phenomena of tides and cur- 
rents; modifications in the atmosphere with regard to 
weight, temperature, humidity, and motion; and, in con- 
nection with this, the flora, fauna, and ethnographical 
relations of inhabitants of different countries. 
In the following statement I shall follow generally the 
division thus indicated; but some of the matters are so 
correlated that notices of matters pertaining, strictly 
speaking, to one, may find its place amongst details given 
of matters pertaining to another, where I find this con- 
venient and justifiable; and what relates to the ethno- 
graphy of the region I may afterwards bring under con- 
sideration in a separate work. : 
