EARLY INVESTIGATIONS OF NORTH AMERICAN FLORA 69 
number of N. American species is increased by about 70, which 
are not mentioned in Hortus Upsaliensis. 
About this time an event of much importance happened. 
Linnaeus succeeded in getting the means to send one of his 
disciples to North America. Pehr Kalm, nine years younger 
than Linnaeus and just appointed professor at the academy of 
Abo in Finland, was entrusted with this commission. From Sept. 
1748 to Febr. 1751 he travelled in Pennsylvania and Canada, 
studying all branches of the natural history and economical re¬ 
sources of these countries. Especially he collected plants and 
seeds, and made notes about all sorts of economic uses of plants. 
Already in the year 1751 he wrote an article on this subject, 
which was published by the Swedish Academy of Science under 
the title »En kårt berättelse, om naturliga stället, nyttan, samt 
skötseln af några växter, utaf hvilka frön nyligen blifvit hem- 
bragte från Norra America, til deras tjenst, som hafva nöje, at 
i vårt Climat göra försök med desammas cultiverande» (a short 
account of the natural station, the use, and the tending of several 
plants, seeds of which have recently been brought home from North 
America, for the use of those who may find pleasure in making 
experiments with their cultivation). At the end of this paper it 
is said that the academy would distribute such seeds gratis to 
persons interested in the matter. 
Kalm has collected the results of his studies during his 
travels in the narrative of his voyage, of which three parts 
appeared entitled »En resa til Norra America» (Stockh. 1753—61; 
English translation by J. R. Forster with the title »Travels into 
North America», London 1770—71). This work is unfinished, 
for he did not succeed in finding a publisher for the following 
volumes, the ms. of which seems to have been lost in the great 
fire that destroyed Abo in the year 1827. Recently a new edi¬ 
tion has appeared (Skrifter utg. af Svenska Litteratursällskapet i 
Finland, 66, Helsingfors 1904—) and in the preface to this we 
are informed that Kalm’s annotations, which he made during his 
voyage and from which he has compiled his narrative, have now 
