"This work will also prove successful in the older deserts such as Sahara, on the Russian Steppes, and in other districts where the mud nuisance will be largely overcome, and in districts such as those in China where famines are induced by climatic conditions which will have been found to be alterable by man through intelligent afforestation and other measures. Only when such problems are treated through a worldwide planning scheme and from a highly scientific angle can it be hoped to produce radical changes in climate and in desert-making conditions, but eventually it can and will be done."