Ribbed circular brown glass bottle, with a paper label, containing tincture of cannabis indica, of which some remains. The bottle is labelled 'Tinct. Cannab. Ind. B.P.', and embossed 'POISON'. Manufactured by Wright, Layman and Umney Ltd of London. Pure cannabis preparations became illegal in the United Kingdom in 1925 when under an amendment to the Dangerous Drugs Act it was classified as a class B drug. As a result all cannabis preparations were removed from the British Pharmacopeia 1930.