Note 109 — Chapter II

We here speak of the fauna as a whole, disregarding particular genera and species. It may be said that some particular plant which is to be found both in France and Norway, is much brighter in colour when it grows in the neighbourhood of the pole than in our temperate climate, but this apparent exception only confirms the rule which we have laid down. The plant whose whole season of bloom is comprised between a late spring and an early autumn develops itself much more rapidly than with us, and, granting that it has become so hardened that it is able to resist the long and hard frosts of winter, it receives, during the short summer, much more light and sun than its French or German sister. During those fleeting summers of the north, whose strange charm has been so often described, the sun hardly descends below the horizon; the nights are an hour long, and not six or seven. The colour of flowers is therefore in exact proportion to the amount of light which they receive.