to find a place where there is
more moss, and if they do, the whole family will follow them."

"Where do they go?" asked Gerda.

"There is a treaty between Norway and Sweden, more than one hundred and
fifty years old, which provides that Swedish Lapps can go to the coast of
Norway in summer, and Norwegian Lapps can go inland to Sweden in winter,"
Lieutenant Ekman told the children.

"Yes," said Erik, "when the moss is scanty or the swarms of mosquitoes
too thick, the reindeer hurry off to some pleasanter spot, without
stopping to ask permission. Perhaps we have been in camp a week, perhaps
a month, just as it happens; but when we hear their joints snapping and
their hoofs tramping all together, we know it is time to take down the
tent, pack up everything and follow the herd to a new pasture."

"I am glad we are out of sight of the photograph shops in Gellivare,
anyway," Birger told Erik, when they were seated in the light carts and
were once more on their journey. "If I could take such good pictures
myself, I shouldn't care; but all my pictures of the midnight sun make it
look like the moon in a snow-bank."

Just then Gerda, who was riding with her father, called to Birger, "Stop
a moment and listen!" So the two posting-carts halted while the children
listened to the music of a mountain stream not far away. Mingled with the
sound of the rushing water was the whirr of a busy sawmill in the depths
of the woods, while from the tree-tops could be heard the call of a
cuckoo and the harsh cry of a woodpecker.

Soon they were on their way again, pushing deeper and deeper through the
Lapland forest; their road bordered with green ferns and bright
blossoming flowers, their path crossed now and again by fluttering
butterflies.

"This is just the right kind of a carriage for such a road, isn't it?"
said Gerda, as the track led through a shallow brooklet.

"Yes," answered her father; "a few of the roads in these northern forests
are excellent; but many of them are only trails, and are rough and rocky.
If the cart were not so light, with only one seat and two wheels, we
should often get a severe shaking-up."

"How does it happen that we can get such a good horse and cart up here
among the forests?" asked Gerda.

"As there is no railroad in this part of Lapland, the Swedish government
very thoughtfully arranges for the posting-stations, and guarantees the
pay of the keepers for providing travellers with fresh horses," her