its effect in stimulating to yet greater 
industry and exertion. Meanwhile, his 
plan for reforming the botanical system, 
was silently advancing ; and he wrote 
several treatises on the classes and 
genera of plants, which at a later period 
were published, and served to diffuse 
his opinions more widely. 
His talents were now justly appre¬ 
ciated by those around him. In the 
year succeeding that in which he be¬ 
came lecturer to Rudbeck, he was cho¬ 
sen by a literary society at Upsal to 
make a tour of philosophical enquiry 
in Lapland ; a part of the Swedish do¬ 
minions which, until that period, had 
never been explored by a naturalist. 
Celsius and Rudbeck, who were lead¬ 
ing members of the above-mentioned 
association, united in recommending 
him as the most suitable person for such 
an undertaking. 
