Inorganic Plant Poisons and Stimulants

The work opens with a concise overview of how the turn of the twentieth century reshaped farming through the growing use of artificial mineral amendments. Drawing on the legacy of Liebig and later field trials, the author weaves together perspectives from botanists, chemists, and practical growers to examine which inorganic substances might boost yields and which merely act as poisons. It sets the stage for a systematic look at a handful of salts whose modest doses promised both stimulation and danger.

Through a series of water‑culture experiments and field observations, the book compares copper sulphate, zinc sulphate, arsenious acid, boric acid, manganese sulphate and others, presenting photographs, growth curves, and detailed notes on seedling responses. The author does not claim definitive answers; instead, she highlights the contradictions in published data and the narrow concentration windows where a toxic element can become beneficial. Readers gain a clear sense of the scientific process that still underpins modern agronomy, making the text a useful reference for anyone interested in the early chemistry of plant nutrition.