Elements of agricultural chemistry and geology

"Elements of Agricultural Chemistry and Geology" by Jas. F. W. Johnston is a book from the 1800's that connects farming to science through chemistry and geology. It explains soils, required plant nutrients, and the chemistry behind farming. The book starts by presenting farming backgrounds in chemistry and geology. These beginnings lead to sections about both organic and non-organic materials in plants, what makes up soils, and the way these materials can make farming better. Johnston argues that farmers must understand the chemistry of soil and plants to grow more crops. The starting chapters describe what plants need, both organic and non-organic compounds, and how they work with farming to help give crucial understandings into successful farming.