Triphenyl rosaniline in a glass bottle

1858-1863

Para-rosaniline in a glass bottle

1858-1863

Trimethyl rosaniline in a glass bottle

1858-1963

Chloride of rosaniline in a glass bottle

1858-1863

Hofmann's gas Demonstration Apparatus.

1875-1876

Trimethyl rosaniline in a glass bottle

1858-1963

Compound of methyl iodide with trimethyl rosaniline in a glass bottle

1858-1863

Molecular models

circa 1875