W. Brockedon's pills: pills, pill-box, and leaflet advertising Brockedon's Patent Compressed Pills of Pure Chlorate of Potass and of Pure Bicarbonate of Potass. From the Wellcome Institute

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Credit: W. Brockedon's pills: pills, pill-box, and leaflet advertising Brockedon's Patent Compressed Pills of Pure Chlorate of Potass and of Pure Bicarbonate of Potass. From the Wellcome Institute. Wellcome Collection. Source: Wellcome Collection.