or cirro-stratus increases in
density and tends to the formation, or induction, of stratus; and whether
it is isolated, or an extension of the condensation of a storm, and if the
latter, _where that storm is_. The time will come when an intelligent use
of the telegraph will do this for you.

3. Look also to the character of the wind, if there be any. On this
subject I have perhaps said all that is necessary in the preceding pages.
Next to condensation, the direction and character of the wind is the most
valuable prognostic. Indeed it often tells us that a storm is approaching,
and the quarter from which it will come, and its character, before the
condensation is visible.

4. See if there is any _secondary_ condensation or scud. These are
sometimes seen running toward a storm, when there are not distinct clouds
visible in the western horizon, at nightfall, or in the evening, as in the
instance stated in the introduction, and sometimes from the north-east, as
in cases heretofore so often stated. But the easterly scud do not often
form in winter, until after the cirrus has passed into the form of
cirro-stratus, or has induced the latter forms in the inferior portion of
the trade, or the surface atmosphere.

The inductive effect of the primary condensation, therefore, is not
always, and especially in winter, sufficient to create the easterly
current and scud, and it is often the case that the easterly wind is not
felt, or the scud seen, in snow-storms, until the snow has begun to fall,
and the first snow will fall with a S. W. air, as I have heretofore
stated. But when the condensation has so far advanced toward stratus that
the easterly wind and scud are obvious, there is little or no doubt that
rain or snow will fall speedily. The occasional occurrence of easterly
wind and scud, without rain, however--dry north-easters, as I have termed
them--in connection with storms passing south of us, or condensation too
feeble to precipitate, should be remembered. The long, dry,
north-easterly winds of spring have been attributed to the icebergs, but
they are overlaid by feeble stratus or cirro-stratus condensation, or are
the result of attraction, by a more southern precipitation. The observer
must be careful to distinguish between the various forms of N. W. scud and
cirro-stratus, which they sometimes resemble. This he may do _from the
direction in which they move_. Cirro-stratus always moves from some point
between S. S. W. and