(Born: Buehl, Baden, Germany, 9 February 1867; Died: Schramberg, Schwarzwald, Germany, 12 February 1949) German orientalist, physician, naturalist & chemist.

Biographical references: Archives Internationales d'Histoire des Sciences: 3 (1950), 912-5. • DBA: II 1112, 16-24. • Isis: 40 (1949), p. ??. • Osiris: 5 (1938), 5-40, portrait. • Poggendorff: 6, 2247-8 & 7, pt. 3, 860. • WBI.

1. German, 1910.
Leitfaden der Mineralogie. Eine Einführung in das Verständnis der Erscheinungen und die Kenntniss der Gebilde des Mineralreichs. Leipzig, Verlag von Quelle & Meyer, 1910.

8°: 144 p., 9 color plates (minerals), 215 text illus. Very scarce.

Bibliographical references: NUC.

2. German, 1913.
Grundzüge der Mineralogie. Leipzig, Verlag von Quelle & Meyer, 1913.

8°: 94 p., 132 illus., 3 colored plates. Subtitle: 1.Teil: Eine Einführung in das Verständnis der Gebilde des Mineralreichs. Very scarce.

Bibliographical references: NUC.

Methodik, 1920

3. German, 1920.
Methodik | Des | Mineralogisch-Geologischen | Unterrichts | Von | Dr. Julius Ruska | a.o. Professor and der Universität und Professor am Gymnasium zu Heidelberg | Mit 35 Text Abbildungen Und Einer Bildtafel | [ornament] | Stuttgart | Verlag Von Ferdinand Enke | 1920.

8°: [i]-viii, [1]-520 p., 35 illus., one plate. Page size: 246 x 148 mm.

Contents: [i-ii], Title page, verso "Alle Rechte..."; [iii]-iv, "Vorwort."; [v]-viii, "Inhaltsverzeichnis."; [1]-508, Text.; [509]-520, "Register."

Very scarce. In Ruska's interesting Methods of Mineralogical and Geological Instruction many, many aspects of the science are covered in short snippets. Besides the standard definitions and information on theses sciences, historical notes, instructions for building collections and crystal and geological models are discussed.

Another issue, 1919: Pagination is identical.

Bibliographical references: NUC. • USGS Library Catalog.

Das Steinbuch Des Aristoteles (Heidelberg, 1912).
See under: Aristotle.

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