(b.) The Air.

Wind. Varying direction, (Note and keep record of the direction of the wind from day to day.)

Warmer and colder winds; rainy and dry winds.

Moisture in the air shown by seaweed; string (changing tension).

Wet cloth dries in the wind (water turns to vapour).

Vapour turns to water, (Breathing on slate. Clouds on hills. Evening mists.)

Clouds in the sky. Three chief kinds: " Heaps," " beds," "feathers,"

Rain. (Note size of drops. Raindrops on dust form little balls. Note effect of heavy rain in tearing up roads. Note the channels so made, and the arrangement of the sand and pebbels washed to a distance.)

Rainbow. (Note the succession of colours. Note position of sun behind observer and of the bow where the shower of rain is falling. Nate that height of arch changes. When is it higher and when lower?)

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Rainbow colours on shells, film of tar, Ac. Feathers of birds.

Dew, (Note when formed. Cloudless weather. On what does it lie thickest ?)

Hoar frost.

Snow. (Note the size of flakes. Movement of flakes in the air as they fill. Snowdrift. Snow squeezed into ice.)

Hail. (Note when it falls. Examine hailstones. Is the hail accompanied by thunder ?)

Thunder and lightning.