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