Paragraph 40. There are several varieties of locust trees, but they are all very similar in their characteristics. They are known principally for their tough wood and coarse texture. They are very hard and strong and will stand exposure to weather conditions almost indefinitely; for this reason locust is the leading timber for fence posts. In recent years, in many parts of the United States, much has been done to raise locust trees for use as fence posts. The locust tree can be recognized by the beauty and grace of its foliage. At the period of its blossom the beauty and fragrance of its flowers render it unmistakable.