tered in
the virgin forests. It seems to force us to the conclusion that the
luxuriance of tropical vegetation is not favourable to the production of
animal life. The plains are always more thickly peopled than the forest;
and a temperate zone, as has been pointed out by Mr. Darwin, seems
better adapted to the support of large land animals than the tropics."

We have already referred to the fact that at the very early age of 14
Wallace had imbibed his first ideas of Socialism, or how the
"commonwealth" of a people or nation was the outcome of cause and
effect, largely due to the form of government, political economy and
progressive commerce best suited to any individual State or country. The
seed took deep root, and during the years spent for the most part
amongst an agricultural people in England and Wales his interest in
these questions had been quickened by observation and intelligent
inquiry. It is no wonder, therefore, that during the whole of his
travels we find many intimate references to such matters regarding the
locality in which he happened to find himself, but which can only be
noticed in a very casual manner in this section. For instance, he soon
discovered that the climate and soil round Para conduced to the
cultivation of almost every kind of food, such as cocoa, coffee, sugar,
farinha (the universal bread of the country) from the mandioca plant,
with vegetables and fruits in inexhaustible variety; while the articles
of export included india-rubber, Brazil nuts, and piassaba (the coarse,
stiff fibre of a palm, used for making brooms for street sweeping), as
well as sarsaparilla, balsam-capivi, and a few other drugs.

The utter lack of initiative, or even ordinary interest, in making the
most of the opportunities lying at hand, struck him again and again as
he went from place to place and was entertained hospitably by hosts of
various nationalities; until at times the impression is conveyed that
apart from his initial interest as a naturalist, a longing seized him to
arouse those who were primarily responsible for these conditions out of
the apathy into which they had fallen, and to make them realise the
larger pleasure which life offers to those who recognise the
opportunities at hand, not only for their own advancement but also for
the benefit of those placed under their control. All of which we find
happily illustrated during his visit to Sarawak, in the Malay
Archipelago.

The whole of these four ye