9. The prosperity of nations rests very largely on the six inches of soil between the surface and the subsoil of the territory.
10. One of the greatest losses to the Ohio farm lands in the floods of 1913 came about because the water took off the top soil from the hillside and valleys and carried the vegetable material with it.
11. The conserving of the top soil is one of the greatest problems in national prosperity.
12. We trust that shipment about September 8 will be satisfactory to you, as it is the best that we can do under the circumstances.
CHAPTER VI
THE NOUN AND THE PRONOUN
For the plural of nouns see [Chapter III].
The classes to which nouns belong are distinguished as follows: