href="@public@vhost@g@gutenberg@html@files@24883@[email protected]#sec_32" class="pginternal" tag="{http://www.w3.org/1999/xhtml}a">The air not yet comprehended—Have we been mistaken?—New light—Electrical induction—Its mode of action and illustrations—The character and virtue of the vito-magnetic element.

CHAPTER IX.

Entertained theories erroneous—Their true character—What gives rise to the currents—Purely vito-magnetic phenomena—Philosophical considerations drawn from observation—Whirlwinds, waterspouts, and tornadoes—The Barbadoes—Manufactured wind—Wind within a wind—Winds may not arise from presumed causes—A great cosmical system.

CHAPTER X.

Old theories—Degrees of spot-shadow overestimated—What spots are not, and what they are—They are caused by magnetic perturbations—Inconsistency of accepted theories—Figures that are deceptive—Effects of these wonderful phenomena—Mistaken conceptions—May not be tabulated—Unbiassed estimate of their character and location.

CHAPTER XI.

Essential character and mode of progression—Waves have no act or part in their conveyance.

CHAPTER XII.