four tubes of powdered phosphorescent chemicals
Date: 1860-1880
Inventory Number: 3733
Classification: Phosphorescent Specimens
Dimensions:23.3 x 20.5 x 10.3 cm (9 3/16 x 8 1/16 x 4 1/16 in.)
Description:
Four tubes containing chemical substances mounted in a wooden frame. There is space for five tubes. Tubes appear to be labeled with handwritten information at one end, though they are mostly illegible. One seems to be containing strontium.