Elementary principles of agriculture Elementary principles of agriculture : a text book for the common schools elementaryprinci02ferg Year: 1913 Appendix I 387 Thorax. The middle part of an insect's body. Tillage. The act of preparing the ground to receive the seed and the cultivation of the plants. Tuber. A thickened underground stem, as an Irish potato. Tubercle. A small wart-like growth on the roots of legumes, caused by the nitrogen-fixing bacteria. Variety. A kind or sort of plant. Viable. Capable of germinating. Having life. Vigor. Referring to the rapidity of growth, without reference

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Elementary principles of agriculture Elementary principles of agriculture : a text book for the common schools elementaryprinci02ferg Year: 1913 Appendix I 387 Thorax. The middle part of an insect's body. Tillage. The act of preparing the ground to receive the seed and the cultivation of the plants. Tuber. A thickened underground stem, as an Irish potato. Tubercle. A small wart-like growth on the roots of legumes, caused by the nitrogen-fixing bacteria. Variety. A kind or sort of plant. Viable. Capable of germinating. Having life. Vigor. Referring to the rapidity of growth, without reference to hardiness. Vital. Of, or pertaining to living things. Water-Table. The line of free or gravitational water in the soil. Weathering. The action of moisture, air, frost, upon rocks, etc. Weed. A plant where it is not wanted. Wilt. Used synonymous with blight. Zoology. The science that treats of animals. **IiOOK out'

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