Twain loved the paddlewheel steamboat and he loved the river. As a matter of fact, it was during his years on the river that he chose his pen name. Mark Twain was a frequent call of the leadsman. It meant that the water was 2 fathoms (12 feet) deep and indicated safe water. A leadline is used to determine water depth and the type of material which makes up the bottom or riverbed. A 30-foot-long line is attached to a pipe filled with lead, except for the bottom 2 inches.
1. Horticulture is a branch of plant agriculture and is both a science and an art. As an art, it incorporates the principles of design (as in landscaping). 2. Horticulture deals with intensively cultured and high-value crops.
Floriculture is the study of growing flowering plants. A floriculturist is a person who specializes in growing and cultivating flowers. If you're just talking about the study â¦ of plants in general (flowering and non-flowering), it's just called botany.3 people found this useful.t could be neuropsychology, or neurophysiology. The study of the brain could be separate from the study of its functions if you step from the neural level to the thinking lev â¦ el.