OMENA OF ATMOSPHERIC WAVES 13

" III.--OBSERVATIONS 18

SECT. I.--Instruments 19

" II.--Times of Observation 28

" III.--Localities for Additional Observations 31

" IV.--Storms, Hurricanes, and Typhoons 43

" V.--Seasons for Extra Observations 48

" IV.--PRACTICAL DIRECTIONS FOR AVOIDING THE CENTRES
OF STORMS 52

NOTICE.

In the pocket accompanying this work are two rings of stiff cardboard,
on which will be found all the information contained in figures 1 and 2.
When they are laid flatly upon a chart, the continuity of the lines on
the chart is not materially interfered with, while the idea of a body of
air rotating in the direction indicated by the arrows is conspicuously
presented to the mind. These rings are more particularly referred to on
page 52.

THE

HURRICANE GUIDE.

CHAPTER I.

PHAENOMENA OF REVOLVING STORMS.

It is the object of the following pages to exhibit, so far as
observation may enable us, and in as brief a manner as possible, the
connexion, if any, that exists between those terrific meteorological
phaenomena known as "revolving storms," and those more extensive and
occult but not less important phaenomena, "atmospheric waves."

To the great body of our seamen, whether in her Majesty's or the
mercantile service, the subject can present none other than the most
interesting features. The laws that govern the transmission of large
bodies of air from one part of the oceanic surface to another, either in
a state of rapid rotation or presenting a more or less rectilineal
direction, must at all times form an important matter of inquiry, and
bear very materially on the successful prosecution of the occupation of
the voyager.

In order to place the subjects above alluded to in such a point of view
that the connexion between them may be readily seen, it will be
important to notice the principal phaenomena presented by each. Without
going over the ground so well occupied by those able writers on the
subject of storms--Redfield, Reid, Piddington, and Thom--it will be
quite sufficient for our present purpose simply to notice the essential
phaenomena of revolving storms as manifested by the