Notebook containing dyed yarn samples and corresponding handwritten dye recipes.

From a photograph taken of a solar eclipse observed from Syracuse, Sicily on 22 December 1870.
From text: "The photograph taken by Mr. Brothers is very valuable, since it shows the halo extending towards the…

Chromolithograph of a table of spectra in full color.

An illustration of a man using Lockyer's telespectroscope. Sir Joseph Norman Lockyer (1836-1920), designed this instrument in order to observe the spectra of the prominences in full sunlight. Lockyer is best known for…

Plate from the publication Spectrum Analysis Explained, Including an Explanation of the Received Theory of Sound, Heat, Light, and Color by Dana Estes (1840-1909). The plate depicts Solar prominences as observed by…

Lorenzo Respighi (1824-1889) was the director of the University Observatory at the Campidoglio at Rome. Starting in October of 1869 he observed daily the entire limb of the sun recording prominences and other phenomena.…

Prominences represented in their natural colors, as seen through a large telescope when the slit of the spectroscope was open wide and directed on to the red C-line. These prominences are characteristic of the a…

Prominences represented in their natural colors, as seen through a large telescope when the slit of the spectroscope was open wide and directed on to the red C-line. These prominences are characteristic of the an…

This plate illustrates four spectra from solar phenomena.
Spectrum 1 is Solar Spectrum and Spectrum of the Prominences, during a total Eclipse.
Spectrum 2 is Spectrum of the Corona. Observed by Charles Young…

Translated from the second enlarged and revised German edition by Jane and Caroline Lassell; edited with notes by William Huggins; with numerous woodcuts and colored plates.

From the Preface: "Its object is, on the one…

Here Schellen is illustrating and explaining the phenomenon of sunspots. The accompanying text states: "In Fig. 106 the drawings marked I represent the varying phases through which a spot surrounded by a penumbra…

Illustration of a man looking through a spectroscope.
From the corresponding text: "Fig. 52, especially the three tubes directed to the prism at different angles, as in that constructed by Kirchhoff and Bunsen. The…

This plate contains two prints from photographs of a solar eclipse viewed in Burlington, Iowa on August 7, 1869.
"The photographic plates, which were exposed for the brief space of from five to sixteen seconds, give…

Prints from photographs taken by Colonel James Francis Tennant (1829-1915). The upper picture shows the eclipse at the moment of totality, and the lower one immediately before it's cessation. Observed from Guntoor,…

An illustration of a solar eclipse during the last 2 minutes, 25 seconds, therefore just before the reappearance of the sun's rays. The accompanying text states: ""Scarcely had the last ray of sunlight disappeared,"…

Man viewing candle light through a prism. Illustration for section 16. Refraction of Monochromatic Light by a Prism.

Third edition volume of Spectrum Analysis by Henry Enfield Roscoe (1833-1915) with numerous engravings and colored plates. Roscoe has included a series of six lectures on the subject of spectrum analysis with…

The fifth edition of a work on dyeing and printing with aniline dyes on fabric, cotton, and silk. Contains 84 colored fabric samples. Only dye samples have been digitized.