7. The per capita saving in the banks of the United States in 1820 was twelve cents; in 1830 fifty-four cents; in 1840 eighty-two cents; in 1850 $1.87; in 1860 $4.75; in 1870 $14.26; in 1880 $16.33; in 1890 $24.75; in 1900 $31.78; in 1910 $45.05; and it is still increasing.
8. The population in 1820 was 10,000,000 and in 1910 90,000,000.
9. Mexico draws about 55% of her imports from the United States; Nicaragua about 50%; the other Central American states from 35 to 75%; Venezuela 31%; Cuba 52%.
10. In one decade Germany's exports to Latin-America have shown an increase of 222%; those of the United Kingdom an increase of 115%; and those of the United States an increase of 130%.
Write five sentences illustrating Rule 5.
Exercise 182—Explanatory Expressions
There are a number of expressions—words, phrases, and clauses—which are inserted into the sentence for clearness or emphasis. They add a bit of explanation but are not absolutely necessary. In other words, they might be omitted, and the sentence would still be clear. These may be of various kinds but are all similar in use. They should be set off by commas so that the reader will easily see that they are subordinate to the main idea of the sentence.
A. The appositive is a word or a group of words inserted lo explain the noun that it follows. (See [Exercise 80].)
Explain the use of the commas in the following sentences:
1. William E. Curtis, one of the world's ablest newspaper correspondents, in his will expressed the hope that his grandson would continue his life-work, a recital of the good that men had done and not of the crimes they had committed.