Scientific American Supplement, No. 799, April 25, 1891

A snapshot of late‑19th‑century scientific thought, this volume gathers a dozen articles that once filled the pages of a popular engineering and technology supplement. Readers hear from architects debating marble and mosaic, botanists describing the many varieties of lavender, and chemists showcasing new weighing devices. The hydraulic section breaks down water‑power in plain language, while a mechanical‑engineering essay explains how compressed‑air compressors and rapid‑stroke pneumatic hammers operate. Throughout, vivid black‑and‑white illustrations bring the concepts to life.

Among the most captivating pieces is a detailed account of the German dispatch boat Meteor, a sleek, 5,000‑horse‑power vessel designed to outrun any contemporary warship. A separate narrative follows the daring rescue of the steamship Ulunda, describing the inventive salvage techniques that amazed naval officers. Together, these stories reveal the inventive spirit and practical challenges that shaped industry and warfare at the turn of the century, offering listeners a rich, contextual glimpse into a transformative era of technology.