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26
I. PHYSICAL GEOGRAPHY OF SWEDEN.
The shortness of our summer is moreover counterbalanced to a
considerable degree by the length of the summer days and their abundant
sunlight, whose salutary influence on both animal and vegetable life is
most conspicuous in such a very northerly country as ours. At
Karesuando (68° 26’ N. L.) the sun remains above the horizon during 53
successive days from May 26th to July 18th, at Haparanda (65° 50’ N. L.)
a little more than 23 hours at the summer solstice, at Stockholm 181’»
h., and at Lund 171/» h. This is partly due to atmospheric refraction,
which increases the average length of the day by 30 minutes in the
northern, and 15 minutes in the southern part of Sweden, the
corresponding figures being only four minutes at the Equator. Still more
important is the influence of the twilight, which adds several hours
to the length of the ’day during the summer in North-Sweden. In
fact, there is uninterrupted day as far south as Hernösand (62° 38’)
from the 16th to the 27th of June.
Winter scene in Stockholm. photo, fr. g. kumaro,
Stockholm.
Thus the Swedish summer, especially in the North, is a season of
nearly continual daylight. These light summer-evenings and nights,
when all nature seems to have fallen into a quiet dream, have a magic
beauty, and constitute one of the most indelible memories retained by
the stranger after visiting our country.
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