A letter to Dr. James Gregory of Edinburgh, in consequence of certain printed papers intituled 'The viper and file', There is wisdom in silence, An old story, &c. ... which have lately been distributed by him / [Andrew Duncan].

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A letter to Dr. James Gregory of Edinburgh, in consequence of certain printed papers intituled 'The viper and file', There is wisdom in silence, An old story, &c. ... which have lately been distributed by him / [Andrew Duncan]. Public Domain Mark. Source: Wellcome Collection.