Complex sentence: Writer Petrus Læstadius wrote in his journal in 1827 that skogssamerna had by now become fewer than the Sami people, but that in Arvidsjaur the population was still all skogssamer and in Arjeplog, Jokkmokk and Gällivare, there was a large population.
Split into simpler sentences: Writer Petrus Læstadius wrote in his journal in 1827 that skogssamerna had by now become fewer than the Sami people. However, he noted that in Arvidsjaur, the population was still all skogssamer, and in Arjeplog, Jokkmokk and Gällivare, there was a large population.