LXVII. <i>Strictures by</i> R<scp>obert</scp> H<scp>are</scp>, <i>M.D. Professor of Chemistry, &c. &c., upon Professor</i> V<scp>anuxem's</scp> <i>Memoir on Plumbago</i>, Anthracite, Fused Carbon, &c. published in the Journal of the Academy of Natural Sciences for June 1825