AND NOMENCLATORS. XIX 



I went by water to St. Petersburg, hoping there to 

 increase my knowledge from visiting the collections of 

 the many scientific men who had travelled through the 

 Russian provinces ; but I found much less than I expected. 

 .... In 1787 I published the ' Mantissa Insectorum/ in 

 two vols., which contained more particularly the correc- 

 tions and additions which I obtained on my travels to 

 Vienna and Petersburg. In the summer I again went 



with all my family to England In 1790 I travelled 



with my wife and daughter to Paris, partly because I 

 knew from intelligence sent me by Olivier that the 

 Parisian cabinets contained a considerable number of 

 insects with which I was unacquainted, and partly 

 because I wished to be fully informed respecting the new 

 order of things which had been introduced by the Revolu- 

 tion. I was received with distinguished attention and 

 friendship. Desfontaines, Jussieu, Bosc, Parmentier, 

 Riche, Sylvestre, Fourcroy, Brongniart, Olivier, Thouin, 

 Billardiere, Broussonet, and others, opened to me all 

 their collections, and by their friendship and kindness 

 contributed much to make my residence there both agree- 

 able and instructive. I moreover formed an intimate 

 acquaintance with some of the leaders of the Revolution ; 

 I often attended both the National Assembly and the 

 Jacobin Club, and witnessed nearly all the scenes of the 

 Revolution which took place. On the whole, my resi- 

 dence at Paris was interesting to me. . . . From 1792-94 

 appeared the ' Entomologia Systematica/ in 6 vols. : it is 

 a further exposition, augmentation, and improvement of 



the ' Systema Entomologiae/ In 1798 I published 



a supplementary volume with additions and improve- 

 ments." A portion of each of these years was spent in 

 a trip to Paris. " From 1798-1804 I went in the spring 

 to Copenhagen, purposely to describe the many new 

 insects which my particular friends and former pupils, 

 Chamberlain, Sehestedt, and Lund, in their real zeal for 

 science had collected." [The Lund and Sehestedt collec- 

 tions are still preserved in the Museum of Natural 

 History at Copenhagen, now under the charge of Dr. 

 Schiodte.] "Their kind friendship allowed me full liberty 

 in examining and describing them. It is the richest 

 collection of the kind with which I am acquainted ; and 

 from it were derived an extraordinary number of new 

 genera, which eventually induced me to treat every class 

 as a whole. This was the origin of my ' Systema Eleu- 

 theratorum/ in two vols., and also of the ' Syst. Rhyngo- 



