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We have examined samples of the waters labelled red and blue. It is claimed for the former that it is a palatable, " highly mineralised " water, and for the latter that it is an excellent table water. The results of our analyses show that the waters contain very slight amounts of organic matter, so slight as to be without importance, and they may therefore be regarded as organically pure. 'Ihe red label water contains a considerably higher amount of saline constituents than the blue labeldoi:10.1136/bmj.1.2002.1169 fatcat:rfxvp6vdb5bl5giz2kix7vdtoe