18. Describe a clover seed. Describe a seed of alfalfa. 19. What insects do you find visiting the red clover blossoms? The white clover blossoms? ALFALFA, OR LUCERNE.[48] [48] Home Nature-Study Course, New Series, Vol. I, No. 1, October, 1904. The alfalfa plant is just now coming into great prominence in New York State. Every teacher, particularly in the rural schools, will need to know the plant and to have some information about it. _What alfalfa is._--It is a clover-like plant. It is perennial. It has violet-purple flowers. The leaves have three narrow leaflets. It sends up many stiff stems, 2 to 3 feet high. The roots go straight down to great depths. _Why it is important._--It is an excellent cattle food, and cattle-raising for dairy purposes is the leading special agricultural industry in New York State. In fact, New York leads all the States in the value of its dairy products. Any plant that is more nutritious and more productive of pasture and hay than the familiar clovers and grasses will add immensely to the dairy industry, and therefore to the wealth of the State. Alfalfa is such a plant. It gives three cuttings of hay year after year in New York State, thereby yielding twice as much as clover does. In the production of digestible nutrients per acre ranks above clover as 24 ranks above 10. When once established it withstands droughts, for the roots grow deep. Alfalfa is South European. It was early introduced into North America. It first came into prominence in the semi-arid West because of its drought-resisting qualities, and now it has added millions of dollars to the wealth of the nation. Gradually it is working its way into the East. It is discussed in the agricultural press and before farmers' institutes. Last year the College of Agriculture offered to send a small packet of seeds to such school children in New York State as wanted to grow a little garden plat of it. About 5,000 children were supplied. The teacher must now learn what alfalfa is. In nearly every rural community, sufficient alfalfa can be found for school purposes. In many places it has run wild along roadsides. On these plants make the following observations: 1. Under what conditions have you found alfalfa growing? How did the plant come to grow there,--sown, or run wild? 2. Describe the form of the root. How does the root branch? 3. Do you find the little tubercles or nodules on the roots? On what part of the roots? How large? How numerous? 4. The crown of the plant (at the surface of the ground),--describe it, and how the tops and the roots start from it. 5. The stems,--how many from each crown, whether erect or prostrate, how they branch. 6. The leaves,--simple or compound? Form? Edges entire or fine toothed? Do the leaves "sleep" at night, as those of clover do? 7. Do you find any distinct spots on the leaves? What do you think is the cause of them?