Chapter 8
51. Burs stick to clothing . . . . . . . . . . . . . . . . . . . 80 52. Man takes plants westward, though a few migrate eastward . . 83
51. Burs stick to clothing . . . . . . . . . . . . . . . . . . . 80 52. Man takes plants westward, though a few migrate eastward . . 83