Images(3)

crystal samples in test tubes

Inventory Number2004-1-0446

ClassificationCrystals

Subject

User Kenneth T. Bainbridge 1904 - 1996

Dimensionstubes: 14.5 x 1.5 cm (5 11/16 x 9/16 in.)
storage box (tubes): 4 x 17.5 x 14.5 cm (1 9/16 x 6 7/8 x 5 11/16 in.)
storage box (broken pieces): 4 x 17 x 12 cm (1 9/16 x 6 11/16 x 4 3/4 in.)

DescriptionA total of 17 test tubes with small crystal samples inside, all labelled, plus the remains of a broken test tube and its contents with two stoppers

Each test tube is labelled with its contents and comments on its quality compared to quartz, as following

- Rock Candy Sugar Opaque or end just visible (tube empty)
- Indiana Fl. Heated (H) best (or list) as good as qtz
- Salt
- Fluorite 3, 4 +5 nearly as good as that of Zeiss (tube empty)
- first label: 6,7+8 Westmorland 8 heated, color due to cathode discharge; second label: Fl. better than 2mm qtz. 6,7+8 the best
- diamond opaque (tube empty)
- Sobenan(?) Topaz / End of spect. faintly visible
- MnO from Elihu Thomson / Transp, to (wavelength) 2200
- Kunzite Opaque
- Alum worse than qtz end of spectrum just visible
- first label: yellow bits worse than qtz; second label: Fl. once colored, showed improvement in grating; third label: A not heated / AH heated, adjacent bits listed / Dec 10 -06' see plate
- Carborundum(?) Opaque
- first label: 2 like post(?) Fl. LE end of spt visible; second label: Barite Opaque or only slightly transparent. TUBE IS BROKEN, empty, contents and pieces of glass kept separately
- FL New Mex / Heated fl. A trifle better than qtz
- Calcite Double Image opaque (empty)
- Silver Chloride / Opaque

remains kept apart (perhaps of broken tube listed above): remains of a test tube, definitely not enough for a whole tube, plus around 20 small bits of crystal, each labelled in black ink.

Curatorial RemarksFor information concerning the life and work of Kenneth Bainbridge, see Bainbridge "People" file. See also Bainbridge, Kenneth T. (Kenneth Tompkins), 1904-1996. Papers of Kenneth Tompkins Bainbridge: an inventory, Harvard University Archives, available at <a href="http://nrs.harvard.edu/urn-3:HUL.ARCH:hua23003" target="_blank">website</a>. This collection documents Bainbridge's professional activities from 1904-1996 and contains biographical materials, correspondence, research and teaching materials, awards, photographs, and newspaper articles.