3. The Tops of Mountains in most Ilands and HeadLands reach to the middle Region of the Air. 4. To enumerate the Mountains remarkable for their Height.

5. To enumerate the Burning Mountains. 6. To explain the Differences of Mountains. 7. Some Mountains are open, others clofe. 8. To enumerate the more famous Promontories. 9. Caves, deep Pits, &c. oppofed to Mountains.

CHAP. XI.

Of Mines, Woods, and Defarts.

Page 158 1. The Difference of Mines, and the more famous of them enumerated.

2. The Difference of Woods, and the more famous enumerated.

3. The Differences of Defarts and the more famous enumerated.

CHA P. XII.

Of the Divifion of the Ocean by the Interpofition of the Land.

Page 165 1. The Ocean furrounds the Earth in a continued

Extent.

2 The Parts if the Ocean are of three kinds, viz. Seas, Bays, and Streights

3. The Ocean divided into four grand Parts, or Oceans,

4. The Parts of the Ocean named.

5. The eminent Bays enumerated, with their Diffe

rentes.

6. The Enumeration and Differences of Streights. 7. The Sea-Coafts traced over the four Quarters, and the Communication of the Parts of the

CHA P. XIII.

Of certain Properties of the Ocean.
1. The Surface of the Ocean Spherical.
2. The Sea not higher than the Land.

Page 181

3. Why the Sea feems to rife higher when viewed at a Distance from the Shore.

4. To explain the Origin of Bays and Streights. 5. Whether the Ocean be every where of the fame Height.

6. The Depth of the Ocean may be found in many

Places but not in all.

7. The Ocean bas no proper Springs.

8. The Saltnefs of the Ocean from the Particles of Salt diffolved in it.

9. Whether Sea Water be fweeter at the Bottom. 10. The Sea grows falter towards the Equator, and the Seafons of it's being unequally falt.

11. Why the Rain is fweet on the Sea.

12. Different Sea Waters are heavier than each other, and than common Water.

13. Sea-Water does not freeze fo foon as RiverWater.

14. Why the Ocean becomes no larger by receiving So many Rivers.

15. Different Parts of the Ocean bave different Colours. 16. Certain Peculiarities in certain Parts of the Ocean. 17. Why the Sea appears luminous; or fhines, by Night, especially when the Waves are violent. 18. The Ocean throws up terreftrial and confiftent Bodies to the Shore.

CHA P. XIV.

Of the Motions of the Ocean, particular it's Flux and Reflux.

1. Water has only one natural Motion.

Page 230

2. When

2. When a Part of the Ocean moves, the whole is moved.

3. To obferve the Point of the Compass wherein the Sea moves.

4. The Motion of the Sea is either direct, vortical, concuffory, or tremulous.

5. Some Motions of the Sea are general, fome particular, and the reft contingent.

6. The Wind causes the contingent Motions of the Sea.

7. The general Motions of the Ocean double, viz. continued, and ebbing and flowing.

8. Winds often alter the general Motions of the Ocean. 9. The Caufe of the general Motion uncertain. 10. What the Motion of the Flux and Reflux is. 11. The Caufe of that Motion.

12. Why at new and full Moon the general Motion of the Sea is more violent; and also the Swell larger.

13. Why on the Days of the Equinoxes the general Motion and Swell of the Sea is greater.

14. A great Flux and Reflux on fome Shores, and on others fcarce fenfible.

15. The Flux of the Sea violent, the Reflux natural. 16. The Flux largest in thofe Places where the Moon is vertical.

17. The Quantity of the Flux not conftant.

18. The Time of the beginning and ending of the Flux different in different Places.

19. In most Places the Sea flows to the Shore fix Hours, and ebbs as many; but in fome Places it flows longer than it ebbs, and vice ver sâ. 20. Whether the Flood begins when the Moon touches the Horizon.

21. The Hour being given, wherein the Flood is at it's greateft Height in any Place, on the Day of new Moon; to find the Hour of it's greatest Height for the following Days.

2

22. The

22. The Winds prolong and shorten the Duration of the Flux and Reflux.

23. A great Diversity in the particular Motion of

the Sea.

24. The first particular perpetual Motion.

25. The fecond

26. The third

27. The fourth

28. The fifth 29. The fixth

30. The Seventh

31. The particular periodical Motions enumerated. 32, Two kinds of Vortices in the Sea.

33. The Caufe of the Tremor in the Sea, with Examples.

34. Why the Pacific Ocean is fo calm in fair Weather, but easily moved with gentle Winds.

CHA P. XV.

Of Lakes, Moors and Bogs.

1. Lakes, Moors, and Bogs defined.

2. Four kinds of Lakes.

Page 280

3. To explain the Origin of those Lakes that neither receive nor Jend out Rivers; and to enumerate them.

4. To explain the Origin of thofe that send out Rivers, but receive none.

5. To explain the Origin of those that receive Rivers, but fend none out.

6. To explain the Origin of thofe that both receive and fend out Rivers.

7. Moft Lakes contain a fresh but fome a falt Water. 8. Whether the Cafpian Sea be a Lake or a Bay. 9. Whether the Euxine be a Lake or a Bay. 10. The Lakes enumerated that have Islands in the middle.

VOL. I.

II. To

11. To make a Lake in a Place affigned; if the

thing be posible.

12. To dry or drain up a Lake. 13. Bogs of two kinds.

14. Bogs contain a fulphureous Earth. 15. To dry a Bog.

CHA P. XVI.

Of Rivers in general.

Page 295

1. The Definition of Rivers, Rivulets, and Springs, &c. 2. Torrents and Rivers fometimes produced by violent Rains, and melted Snow.

3. Moft Rivulets rife from Springs, and Rivers from a Conflux of Rivulets.

4. Rivers enlarged by Rains and melted Snow at different Times of the Year.

5. The Caufes of Springs, or the Origin of Spring-Water. 6. Some Rivers dip under Ground, and rife again. 7. Rivers difembogue into the Sea, or Lakes. 8. Few Rivers become stagnant.

9.

Whether the Chanels, and Windings of Rivers were made by Nature or buman Industry.

10. Chanels, the nearer to the Spring-Head the higher ; and the nearer to the River's mouth the deeper. 11. Of Cataracts.

12. Why Rivers are broader in one Part than another. 13. The Chanels of Rivers fink more or less in one Part than another.

14. Why Some Rivers are rapid, others gentle; and why the fame River is more rapid in one Place than another.

15. Some few Rivers run a direct Course; but most a winding one, to their Exits.

16. The Lakes thro' which certain Rivers have their Course.

17. Moft Rivers the nearer their Mouths, the wider they become.

18. The