The views of de Vries and others as to the importance of " saltatory variation," the soundness of which was still by no means generally accepted in 1910, may be gathered from the articles Mendelismvi and Variation.
The soundness of these views and the legitimacy of Uitlander aspirations were recognized by a few Boer officials at Pretoria.
Though not a profound scholar, he was surpassed by few biblical commentators of his day in range of learning, and in soundness of judgment.
His military genius showed itself not so much in actual generalship as in the organization of his plans, the selection of his generals and his ministers, the tenacity of his purpose and the soundness of his judgment.
A cement not perfectly sound will give low results in the hot test, and a cement of indifferent soundness will crack and go to pieces.