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
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