Volcanic eruption near Santorini, Greece, creates new islands. 1866. Die Natur. March 6, 1867.
Volcanic eruption near Santorini, Greece, creates new islands. 1866. Die Natur. March 6, 1867.
Number of speakers of European languages in 1801 and 1911. The universal alphabet. 1911.
“Examples of artistic writing.” Beispiele kunstlerischer Schrift. 1900.
Das buch von der biene. 1898. Cover art.
A telephone in a print ad. Das neue Frankfurt. March 1929.
Three years after the Krakatoa eruption half a world away, the sky in Germany showed the effects of the great volcanic event. Jena, April 24, 1886. Noon.
Untersuchungen über Dämmerungserscheinungen : zur Erklärung der nach dem Krakatau-Ausbruch beobachteten atmosphärisch-optischen Störung. 1888.
Der gestirnte Himmel : Eine gemeinverständliche Astronomie. 1887. Book cover, detail.
Plate V. Yearly movement of the earth around the sun. Lehrbuch der kosmischen Physik. 1856.
The drawing pulls me in like a mandala, and the handwriting seems to be designed only to communicate esoteric knowledge. Vorträge über Kinematik. 1870. e-rara
A pair of scissors transforms into a ballet dancer. One of a series satirizing Darwinism. Evolution of household articles, animals etc. 187-?
Complementary colors. Das Büchlein vom Leben nach dem Tode. 1915.