The electron capture detector (ECD) was invented by Dr. James Lovelock (1919-2022) in 1957. ECDs detect molecules in gas via electron capture ionization and are used in gas chromatography to detect traces of chemicals…

Volume five of five brocade-bound sets of 60 Chinese watercolor paintings. The watercolors show, in chronological order, the process of producing Ramie cloth, a silk-like fabric, in China during the 1820s. The…

Trade card for waterproof celluloid collars, cuffs, and shirt bosoms featuring a racially stereotyped depiction of an Asian boy smoking an opium pipe. A celluloid cuff and collar adorn the boy's exaggerated Asian-style…

A manual for Harry Potter Spells & Potions Chemistry I Set No. 501.

Digitized content includes the work's first two pages. This work is protected by copyright law; to view the full text, contact or visit the Science…

Michael Faraday (1791-1867) solicits help from James Curtis Booth (1810-1888) in securing permission for Friedrich Wohler (1800-1882) to tour a Manchester factory.

Manual written to accompany the Microcraft Microscope Set No. 310 for the amateur microscopist. Includes instructions for using the microscope and accessories, as well as a range of experiments and recommendations for…

Teddy Ruxpin is an animatronic children's toy in the form of a talking 'Illiop', a creature that looks like a bear. The bear's mouth and eyes move while "reading" stories played on an audiotape cassette deck built into…

Engraved plate depicts the components of a pocket microscope with a mirror or speculum used to project light through the specimen. The parts and functionality are explained in detail in chapter IV, entitled "A new…

Leeches have been used in medicine since ancient times. During the Victorian era, French physician Francois-Joseph-Victor Broussais sparked a boom in the leech trade with his popular theory that diet, bloodletting, and…

An advertising pamphlet for Eveready flashlights, includes an explanation of how an electric flashlight will aid the user along with how it operates with the use of an Eveready Tungsten Battery. Features illustrations…

In the center of a large room, a surgeon in a red cap and apron kneels to apply a leech to the foot of his bearded patient. Scenes of bloodletting and leechcraft are common in such images of doctors' surgeries. The…

This type C medium-sized research microscope was manufactured by Ernst Leitz of Wetzlar, Germany. Featuring a black enamel horseshoe-shaped base and arm, this microscope also includes a reflecting mirror, eye piece,…

American Optical Corporation Sixty student model monocular microscope features American Optical Spencer objective lenses.

American Optical Corporation was a successor to the Spencer Lens Company, founded by Charles…

Group portrait with Dr. Michael Somogyi (1883-1971) and Dr. Irene E. Karl (1915-2006) at the Jewish Hospital of St. Louis. Dr. Karl, wearing a lab coat and striped blouse, stands next to Dr. Somogyi on his left-hand…

Portrait of Dr. Michael Somogyi (1883-1971), a Hungarian American professor of biochemistry at the Washington University and Jewish Hospital of St. Louis, who prepared the first insulin treatment given to a child with…

Frontismatter and plates have been digitized from this volume on poisonous substances. Chromolithographed frontispiece plate illustrates blood spectra. Digitized plates depict various poisonous substances under…

Reproduction portrait print of French chemist Louis Pasteur (1822-1895) depicting Pasteur in his laboratory at the rue d'Ulm, surrounded by his experimental apparatus and innovative laboratory glassware developed for…

Featured on the back cover of Puck magazine, this cartoon entitled "The Pasteur Boom—High Times for Hydrophobists" mocks those who traveled to France to receive Louis Pasteur's (1822-1895) new vaccine for the rabies…

Interior photograph depicts a man standing next to a laboratory table with a man standing behind the subject holding what appears to be a needle or a medical device. Another man stands behind the subject holding up his…

In this pioneering work on microscopy, engraved plates detail the physiology of natural history specimens. Known as the "Father of Microbiology," Antoni van Leeuwenhoek (1632-1723) is considered one of the first…

Trade card for waterproof celluloid collars, cuffs, and shirt bosoms depicts a magician pulling a celluloid cuff out of a bowl of water, demonstrating their waterproof appeal. He also wears a celluloid cuff as a hat.…

Trade card for waterproof celluloid collars, cuffs, and shirt bosoms depicts a boy sailing on a cuff, demonstrating their waterproof appeal. Verso includes an advertisement for celluloid products along with advice for…

Color print advertisement for International Business Machines Corporation (IBM). Image depicts a rose on the left, a blue eye on the right, and a multi-colored chemical model in the center of the page. The accompanying…

Print advertisement for an electron microscope and other electronics manufactured and sold by the Radio Corporation of America (RCA) for various scientific and industrial applications. The advertisement features an…