{ "viewingDirection": "left-to-right", "metadata": [ { "label": "Date of Publication", "value": "1848" }, { "label": "Place of Publication", "value": "London" }, { "label": "Physical Location", "value": "Cambridge University Library" }, { "label": "Extent", "value": "xli, 584 p., [8] p. of plates : ill., map ; 23 cm + 11 maps (col. ; on sheets 44 x 57 cm., in portfolio 60 x 47 cm.)" }, { "label": "Funding", "value": "" }, { "label": "Abstract", "value": "