Muscovite mica, biaxial, parallel (extinction) position, conoscopic
Transparency
Muscovite mica, biaxial, parallel (extinction) position, conoscopic
1932–1935
Color transparency (Autochrome)
Overall: 3 1/4 × 3 1/4 × 1/8 in. (8.2 × 8.2 × 0.3 cm)
Gift of Edwin E. Jelley, 1963
Inscriptions Printed on applied label on plate recto, TC: E.E.J.
Inscribed in blue ink on applied label on plate recto, TC: 8422 \ 13.
Inscribed in blue ink on applied label on plate recto, TC: 8422 \ 13.
