12 



ISKRNT LYNGR. 



M.-X. Kl. 



200 in^ arc necessary. Tlic estimate in Üsteidali n (I lodalen) is that collecting 

 is unprofitable if as nuicii as 300 m^ is necessary. 



If a faiiiicr has jo cows and some sheep and goats and yearly uses 

 60 sledge loads of 'moss' for his stock, he requires quite a large area. 

 According to the above estimate he must gather 4800 18000 m^ of well- 

 covered lichen field a year, and if the lichen requires something like 



Fig. 4. Dung av Cladouia alpestris. Jægelvarre pr. Karasjok, Finmark. 



Author phot. 24. 7. 1917. 



30 years to recover after collection he must have a lichen field of 150000 — 

 550000 m^ at his disposal. — Farmers always use their mountain fields, 

 not their forest (subalpine) fields, in order to avoid pine-needles. 



This corresponds to a much larger area of mountain, for even on the 

 richest field it is only a certain percentage of the ground which is covered 

 with lichens of economic value. — On the other hand it is only few far- 

 mers who give their cattle so much. Farmers who have more grass use 

 less 'moss'. The average in the 'moss districts' is 3—^5 sledge loads 

 for each cow'. 



' HøYEM. Moseberging. Tidsskr. Norske Landbruk 1913, p. 182. 



