1Enclosure: Nicolas Louis Vauquelin’s Analysis of Green Tobacco, 12 January 1809 (Jefferson Papers)
Analysis of the Nicotiana latifolia. By M. Vauquelin . translated by D. B. Warden . Though we cannot doubt that the different methods in the preparation of tobacco modify the principles contained in this plant, it is nevertheless certain that the changes which these principles undergo do not entirely destroy their particular properties; for if this were not so, it is evident that we could also...
2Enclosure: Nicolas Louis Vauquelin’s Analysis of Prepared Tobacco, [12 January-17 April 1809] (Jefferson Papers)
Analysis of Snuff of the Hôtel Longueville —By Mr Vauquelin . In occupying myself in this research, my object was to know whether the principles discovered in the green Nicotiana also exist in the prepared tobacco; and if not, to find out what kind of change it undergoes. I also hoped to discover the substances employed in the preparation of snuff. 240 grammes of tobacco in powder washed five...