3 packets of six round plain cut burs, for straight handpiece, sizes 6 and 7(2), steel, by Ash, England, 1925-1940 3 packets of six round plain cut burs 1925-1940
Boussingault's apparatus for investigating carbon dioxide uptake by plants for photosynthesis, French, 1840 Boussingault's apparatus for investigating carbon dioxide uptake by plants for photosynthesis 1840
Elevating rack, pine, probably English, 1880-1940 Elevating rack, pine, probably English, 1880-1940 1880-1940