Engraved plate depicts the components of a microscope that can examine opaque objects. Using the compass microscope as a basis for the design, this microscope incorporated a hinged focusing system with a reflector or…

Plate III depicts the double reflecting microscope, which is described as having a greater ease of use than John Marshall's (1663-1725) great double microscope. The components and operation are discussed in detail in…

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…

Engraved plate depicts the components of James Wilson's (active 1702-1710) single pocket-microscope, which is explained in detail in chapter III. Wilson introduced this screw-barrel microscope to the Royal Society in…

Plate illustrates the moon's craters (figure 20), an armillary sphere (figure 21), celestial positioning (figures 19, 22-24, 26) and a comet (figure 25). This plate comes from the "Astronomie" section of Volume 5 of…

This book popularized the microscope in the 18th century. The first section describes simple and compound microscopes along with how to prepare specimens and calculate their size. The second section introduces the…

Map of western Pennsylvania documenting oil production centers as well as bodies of water (Lake Erie, Allegheny River), cities (Titusville, Pittsburgh), and neighboring states (Ohio, New York).

Dmitry Ivanovich…

Dmitry Ivanovich Mendeleyev (1834-1907) traveled to the United States in 1876 to visit the booming oil industry in western Pennsylvania. During his visit, he studied rock formations in the area, visited oil refineries,…

This is the first published periodic table of elements in its modern form with the elements of each group arranged vertically. Dmitry Ivanovich Mendeleyev (1834-1907) created this table for the second edition of his…

Plate depicts a man standing at a table where sunlight is projected past a mirror, causing the heating of antimony, as illustrated by the plume of smoke emanating from the antimony specimen located on the table. A…

The second edition of Nicaise Le Fèvre's (1610-1669) seminal work was augmented shortly before the death of the author. Popularizing the science of chemistry, select plates have been digitized from both volumes of this…

A key to alchemical and chemical symbols.

The second edition of Nicaise Le Fèvre's (1610-1669) seminal work was augmented shortly before the death of the author. Popularizing the science of chemistry, select plates…

The second edition of Nicaise Le Fèvre's (1610-1669) seminal work was augmented shortly before the death of the author. Popularizing the science of chemistry, select plates have been digitized from both volumes of this…

English chemist William Hyde Wollaston invented the Scale of Chemical Equivalents which is explained in this publication along with a foldout plate illustrating Dr. Wollaston's Synoptic Scale of Chemical Equivalents.…

English chemist William Hyde Wollaston invented the Scale of Chemical Equivalents which is explained in this publication along with a foldout plate illustrating Dr. Wollaston's Synoptic Scale of Chemical Equivalents.…

Author John Dalton outlines his own red-green color blindness discovered through botanical studies of flower hues. Blank endpapers omitted during digitization.

This volume by Tiberius Cavallo is considered one of the earliest and best works on aerostation published in eighteenth century England. Divided into two parts, this work details the history of aerostatics followed by…

Copperplate engraving illustrates the chemical apparatus and balloons used for hydrogen generation. In figure four, a hot air balloon and basket support a passenger.

Fig. 1: The set up for filling a balloon with…

Copperplate engraving illustrates the chemical apparatus and balloons used for hydrogen generation.

Fig. 1: Practical experiment to show the principle behind a rarified (hot) air balloon. A paper cone is suspended from…

Forty-three experiments are detailed within this work, including the physical and chemical properties of air proving it has weight along with determining that a vacuum restricts the transmission of sound as well as the…

The cover and title page are digitized from the first edition of this seminal work responsible for exposing dangerous adulterations to foods and beverages. Food and drug purity legislation followed later in the…

Johann Gottlob von Kurr (1798-1870) published Das Mineralreich in Bildern as a professor of mineralogy and botany at the Stuttgart Polytechnic Institute in 1858. Digitized in entirety, this first edition English…