S. 266 Other geological Surveys, 1817-28:
"A few months after his move to Calcutts […] Mackenzie writes to Ridell: 'Geology is the great fashion here now. Three or four eminent geologists & naturalists have arrived in the course of these 18 months; one very lately from France [De Vaucel], who is the precursor of the celebrated Humboldt [44 n.5] who is expected out next year.' […]6"
6 Dnn. 156 (327), 13.2.18.