No coin nor oath required. For personal study only.
Iirivc reiitl with great interest tlic lcttcr on C'liemicril Stonewiirc i n your issiic of Scptcnibcr 29.
I \vns prcscnt t i t tlie tliscrissioii on lend-lined plrint iuiid clicmicril stonewire to \vliicli p i i r iirt icle of Septcm-Ler 2'7 rcfcrrccl. If Mr. Ihrrctt \voiiItl rcritl that nrticlc iigain lie \voultl find that the definite clriim of with-.;tantling n tcnipcriitnrc of 220" C. is nintlc for Ihitisli stuneivnrc. This is ccrtiiinly not '* ~iigiit*.
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