Universal Technological Dictionary Collection

Epicycles of Mercury and Venus, 1823 C017 / 8061
Epicycles of Mercury and Venus, 19th-century diagram. This geocentric (Earth-centred) model shows the orbits of Mercury and Venus as a series of epicycles (loops)

Defunct Linnaean taxonomy, 1823 C017 / 8071
Defunct Linnaean taxonomy. 19th-century artworks of mammals and reptiles classified according to now mostly defunct Linnaean taxonomy

Defunct Linnaean taxonomy, 1823 C017 / 8070
Defunct Linnaean taxonomy. 19th-century artworks of a range of mammals classified according to now mostly defunct Linnaean taxonomy

Musical notation and tables, 1823 C017 / 8069
Musical notation and tables, 19th century. At upper left are a set of musical scores, showing examples of musical notation and keys

Mechanics illustrations, 1823 C017 / 8068
Mechanics illustrations, 19th century. Across top are three types of lever, with the weights and pivots in different locations. Below these are several systems of pulleys and a weighing balance

Fish illustrations, 1823 C017 / 8067
Fish illustrations, 19th century. These ten fish are (top to bottom, left to right): a Conger eel; a tube-eye fish (Stylephorus chordatus); a swordfish (Xiphias gladius)

Insect illustrations, 1823 C017 / 8066
Insect illustrations, 19th century. These insects include (from top to bottom): two mantids (Mantis oratoria, now Iris oratoria; and Mantis siccifolia), a cricket (Gryllus montrosus)

Botany illustrations, 1823 C017 / 8064
Botany illustrations, 19th century. These illustrations show plant taxonomy (Linnean classes and orders) as established by Swedish botanist Carl Linnaeus (1707-1778) in his Systema Naturae (1735)

Botany illustrations, 1823 C017 / 8063
Botany illustrations, 19th century. These illustrations show compound leaves. Compound leaves are those where the leaf is divided into separate leaflets

Insect illustrations, 1823 C017 / 8065
Insect illustrations, 19th century. The insects shown here include: a stag beetle (Lucanus cervus, top left); a Papilio swallowtail butterfly (upper right); a Dytiscus diving beetle (top right)

Botany illustrations, 1823 C017 / 8062
Botany illustrations, 19th century. These illustrations show inflorescences (top) and simple leaves (bottom). Inflorescences are clusters of flowers

Astronomy diagrams, 1823 C017 / 8060
Astronomy diagrams, 19th century. These relate to observing and describing the position of stars and other objects in the night sky. Across top are right, oblique and parallel spheres

Solar system diagram, 1823 C017 / 8059
Solar system diagram, 19th century. This diagram shows the Sun (centre) and the orbits and astronomical symbols of the planets and major asteroids, with a comet (parabolic orbit)

Astronomy diagrams, 1823 C017 / 8058
Astronomy diagrams, 19th century. At centre is an armillary sphere, a device with moveable interlocking rings representing the circles of the celestial sphere

Human anatomy, 1823 C017 / 8057
Human anatomy. 19th-century illustrations showing the anatomy of a human skull (upper left), brain and spinal column (upper centre), chest and abdominal organs (lungs, heart, liver, stomach)

Middle Eastern alphabets, 1823 C017 / 8056
Middle Eastern alphabets. 19th-century tables showing the scripts and alphabets used in Hebrew, Samaritan (Hebrew and Aramaic), Phoenician (Proto-Canaanite, coin numbers)

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"Unlocking the Secrets of the Universal Technological Dictionary: A Glimpse into 19th-century Knowledge" Step back in time and explore the fascinating world of knowledge with the Universal Technological Dictionary. Published in 1823, this remarkable compendium offers a glimpse into the diverse fields that shaped our understanding of science and technology during that era. Delve into celestial wonders as you navigate through intricate diagrams depicting the epicycles of Mercury and Venus. Marvel at how astronomers sought to unravel the mysteries of our solar system centuries ago, paving the way for future discoveries. Travel further down this intellectual journey and encounter a defunct Linnaean taxonomy, showcasing early attempts to classify living organisms. Witness how scientists grappled with organizing nature's vast diversity before modern biological systems emerged. Immerse yourself in musical notation and tables, where harmonious melodies were transcribed onto paper, capturing emotions through soundwaves. Discover how composers meticulously crafted their masterpieces using these timeless tools. Engage your mechanical curiosity by studying detailed illustrations on mechanics – gears turning, levers shifting – revealing principles that underpin countless inventions we rely on today. These visual representations offer insights into machines' inner workings from an era when engineering was rapidly advancing. Dive beneath ocean waves as you examine fish illustrations teeming with vibrant colors and intricate details. Observe marine life frozen in time, reminding us of Earth's incredible biodiversity waiting to be explored even then. Witness insect illustrations buzzing with life; each delicate wing stroke captured meticulously by skilled artists who aimed to document every species they encountered. Appreciate their dedication to preserving nature's tiniest marvels within these pages. Embark on a botanical expedition through lush landscapes depicted in vivid botany illustrations. Study plant anatomy intricately portrayed - petals unfurling, roots spreading - offering glimpses into flora's hidden wonders discovered long ago.