This volume begins a detailed exploration of remedies derived from forest trees, examining the inherent sympathies and antipathies between different vegetation species, such as the fatal hostility between the quercus and the olive, or the cabbage and the vine. Pliny lists scores of specific curative properties for various trees, detailing how bark, leaves, roots, and gums are prepared to treat conditions ranging from dysentery and burns to toothache and snake bites. The narrative then shifts to wild plants, highlighting the historical discovery of their medicinal virtues by early scholars, native tribes, and even animals. Detailed instructions follow for gathering and testing powerful agents like hellebore, dictamnus, and aristolochia, noting the various ceremonies and precautions required to ensure their efficacy while avoiding toxicity.
Subsequent sections categorize plant-based remedies according to the specific maladies they target, offering treatments for head conditions, ophthalmic disorders, dental pain, respiratory ailments, and internal diseases. Pliny weaves historical accounts, medical opinions from classical physicians, and folk observations into a vast encyclopedia of ancient pharmacology. The text addresses both the legitimate therapeutic benefits found in nature and the superstitions and magical practices associated with certain botanical species. It concludes by transitioning from terrestrial plants to aquatic productions, examining the therapeutic properties of various waters, salts, and sponges in healing the human body.
