Unpublished letter, 'A case of a blue child, with the dissection' from John Freeman Wood to W G [William George] Maton Wood describes the case of a boy who had blue skin due to a heart condition and who died at 21 months old due to convulsions. He then describes the autopsy of the boy, who seemed healthy apart from the heart which was found to have unusual anatomy, including an additional vena cava. Includes two illustrations. Subject: Anatomy Written by Wood at 7 Beaumont Street, Portland Place [London]. January 1819