The chemical methods for estimation of vitamin E, recommended in the literature, are all based on the oxidation ofa hydroquinone nucleus which is present in all modifications of tocopherol. This nucleus can either be oxidized in such a way as to give a coloured product, or its reducing power may be measured and hence the quantity of tocopherol calculated. The latter principle is employed in the...

group are diseases requiring the same sort of treatment. A glance at the table of contents will show how this is done : the catarrhal group ; the serous effusion group (pleurisy, pericarditis, etc.) ; the calcium insufficiency group (purpura, chilblains, rickets, cretinism) ; the ansemic group (anaemia, chlorosis, Banti's disease, leukaemia) ; the vitamine insufficiency group (scurvy, beri-beri...