7. Name some companies that manufacture only one article.
8. Name some companies that manufacture more than one article, but all of the same class. This is the largest group.
9. Name some companies that manufacture several different kinds of articles.
10. Name some companies which, in manufacturing one product, make a secondary or by-product.
11. Name a number of by-products and what they are by-products of.
Oral or Written
In each of the following emphasize the labor involved, not the machinery used; prepare outlines:
1. Select any manufactured article that you have seen on a grocer's shelves, and trace it through (2), (3), (4), (5), and (6) above, from the raw material until the product is in the housekeeper's hands. If possible make your information exact by visiting a factory in which the article is made. The information contained in advertisements of well-known articles may help you.
2. Trace the labor that is necessary to put a loaf of bread on the table.
3. Trace the changes that the mineral undergoes to be suitable for the making of edged tools, such as knives or axes.