CXLI. Ch. Bonnet, Genf, 21. April 1761: Mon 
neveu de‘'Saussure a ’honneur de vous &crire par ce cour- 
rier, quoique fort occup& ä se pr&parer & disputer vendredi 
prochain notre chaire de math&matiques 117). 
CXLI. Valltravers, Stockholm, 12. Mai 1761: After 
an instructive, tho painful, an attendance of 28 Months on 
the young barons de Demidoff, rewarded with 1550 ducats, 
besides their everlasting Friendship : I now return to my 
Wife in England, by the Way of Copenhagen and Ham- 
burg; and hope to see her next Month. I carry along 
with me 813 swedish plants, ranged after Linn&us’s method; 
a compleat set of all kinds of swedish insects; many Books 
and a very rich collection of about 400 different specimens 
of swedish ores, agreable to Wallerius’s and Cronsted’s 
mineralogie, All which I am now shipping for England; 
inorder to be laid by, to all my other collections, made in 
Denmark , Norvay and England. Such a one I am sure, 
there never was yet in Switzerland. The royal Academy 
of sciences at Upsala has conferred the same Honour on 
me, as your worthy Society of arts and agriculture at Bern, 
in electing me one of their honourary. members. 
CXLEEEL. Thiery, Paris, 15. Mai 1761: M. votre 
fils s’est attir&e l’estime et l’amiti& de tous les honn6tes gens 
qui ont eu l’avantage de le connaitre. Il sera, ä ce que 
jespere, recu correspondant de l’Acad&mie des Inscriptions 
avant son depart. 
CXLIV. Popowitsch, Wien, 24. Juni 1761: Der 
Parisische Sternseher Cassini ist seit dem 18. Mai hier. 
Den Durchzug der Venus durch die Sonnenscheibe hat man 
117) Scheint nicht reussirt zu haben; dagegen wurde er ein 
Jahr später Professor der Philosophie. 
