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Carengeot hinged contact goniometer, a fine example, c.1820
by "Pixii, Neveu et S'r de Dumotiez, Rue du Jardinet No.2, a Paris"
Measuring 4-1/4" (11 cm) wide, this lacquered and silvered brass goniometer is complete, mounted with two polished steel sliding blades for rather universal possibilities of crystal edge contact, with measurement against the semicircular arc divided every degree to 180. The arc is hinged at 90, to fold aside, and has a blued steel stabilizing strut. Condition is very fine, noting a few oxidation spots on the steel, and some loss of silvering on the scale. It is complete with the original shaped wood case covered in thin red Morocco leather (hinge separating) and lined in green velvet.
BARBA, Alvaro Alonso, 1676
Berg-Büchlein, Darinnen von der Metallen und Mineralien…
Hamburg / Auf Gottfried Schultzens Kosten
8vo (160 x 93 mm), p. , 204  p., one plate
"In 1588 Barba was sent by the church to Peru, where he combined priestly duties with studies of mineral deposits, mining, and especially the treatment of silver ores by amalgamation. He traveled widely in the Peruvian provinces, living in Tarbuco (1590) and Tiahuanaco (1615). 1617 he moved to Yotala in Los Lipez province where he perfected his new procedures for treating silver ore. After 1624 Barba served the San Bernardino parish in the famous silver town of Potosi, where he presumably died sometime after 1639" (DSB)
Contents very good. Marbled boards. Ex Libris Robert Honeyman IV.
Goldschmidt Victor, Atlas der Krystallformen
Helmut Enzinger (ask me for more info and photographs)
Text + Tafelbände
Band 1 - 1913 – Textband 248 Seiten – Adamin - Buntkupfererz
Band 1 - 1913 – Tafelband 244 Seiten – Adamin - Buntkupfererz
Band 3 – 1922 – Textband 195 Seiten - Safflorit – Topas
Band 3 – 1922 – Tafelband 149 Seiten – Safflorit – Topas
fresh, uncut, as issued
Rose Gustav, Die heteromorphen Zustände der kohlensauren Kalkerde
complete in 2 volumes
Band 1 – Berlin 1856 – 76 p – 4 engraved plates
Band 2 – Berlin 1859 – 48 p – 3 engraved plates
more photographs on request