Observations on the bed of the sea-Currents of
the ocean-Courses of the tides-Whirlpools-
Tides of the Orkneys-Counter currents occasion
the tides of Europe and America-Course of the
current of the North Pole-Tides of the solstices
and equinoxes-Ebb and flood-Tides of the South
Pole-Thawing of ice-Icelands-Equilibrium be-
tween the Poles-Total effusions of the Polar ices
sufficient to produce a general deluge-The au-
thor's theory of the general deluge-The two
principal currents of the ocean-Mouths of rivers,
use of islands in them, &c.-Lofty peaks possess
the property of attracting clouds-Lakes near the
sources of rivers-Mountains of islands-Peak of
Teneriffe-Influence of the sandy zones on the
Polar ices-Periodical removals of sands-Vol-
canoes-Formation of strata of marl and flints, &c.
-Sources of the Atlantic ocean-Elevation of the
Poles-Elongation of the earth at the Poles-Effu-
sions of the Polar ices-Periodical currents of the
Atlantic ocean-Observations on the migration of
fishes, and their forms-Marine plants, &c.
STUDY V.-Replies to the Objections against Provi-
dence founded on the Disorders of the Ve-
Utility of the periodical inundations of certain
rivers-Picture of Nature recovering her domi-
nion usurped by man, and beauty of prospects not
mutilated by his hand-Scene in the Isle of France
and Russian Finland-Plants not the production of
chance-Their mechanism-Varieties of vegeta-
tion in different climates-Provision of Nature for
the animals of hot and cold climates-Vegetation
not impeded by cold-Vast size of fir trees in the
north regions-Influence on the climates from
cutting down forests
STUDY VI.-Replies to the Objections against Provi-
dence founded on the Disorders of the
Animal Kingdom
Fecundity of the northern regions-Large size of
the fish there-The herring fishery-Migration of
herrings, &c.-Abundance of fish in the southern
hemisphere and west coast of America, and the
beneficence of Nature in sending shoals from the
Poles-Necessity for beasts of prey-Insensibility
of some animals destined for the prey of others—
Analogy between fishes and insects-The genera-