theories of the earth's rotation and revolution. Day by day children
should note the changes of slant upon the shadow stick which they can
easily make for themselves.

CHAPTER VII.--THE BAROMETER.

Our little friends have their first lesson concerning one of the three
great envelopes of the earth-the atmosphere. The knowledge that air has
weight does not often come by unaided intuition. The initial experiments
may be made very interesting and profitable. The United States Weather
Reports are an excellent means for the home study of geography.

CHAPTER VIII.--A WALK IN THE WOODS.

"There is pleasure in the pathless woods" and "The groves were God's
first temples" are lines which appeal strongly to those who have spent
hours in the shadows and flickering sunlight of the forest. Trees well
arranged make many farmhouses beautiful. Trees by the roadside add much
beauty to the landscape and afford places of rest to the traveler.

Forests mean moisture to the soil. Their leaves and roots make the best
reservoirs for water, to be given out when needed by the growing crops.
The forests are full of lessons for the children and the experienced
scientist.

CHAPTER IX.--THE BIRDS AND THE FLOWERS.

The knowledge of a farm child is quite extensive, and generally neither
the child nor the parent has any suspicion that such knowledge is of any
appreciable value in education. It is clearly within the bounds of