Correspondence and papers on tannin content and pharmacology of tea in response to claims in advertisements for Doctors' China Tea and Brooke Bond Digestive Tea
Correspondence and papers concerning writing and publication of A New Essay upon Tea, addressed to the medical profession... (London, 1935) published by the ITA largely in response to the advertisements mentioned in 1405 above; includes copies of the book
Correspondence and papers concerning lead content of tea and the practice of packing tea in lead-lined chests, in the light of the USA Department of Agriculture restrictions on lead in foodstuffs.