White ceramic jar with lid, containing white power, labelled "Sachm. Saturni" James Watt's Garret Workshop 1790-1819
Ceramic jar with lid, containing brown plant flakes, labelled "Argal" James Watt's Garret Workshop 1790-1819
Large jar containing: white powder, piece of paper, plate for lid James Watt's Garret Workshop 1790-1819
One large Jar, two lids, “Fresh plaster A Apl. Ist. 1818, jar broken" James Watt's Garret Workshop 1818