John recoiled from the idle casuistry which occupied his own logical contemporaries; and, mindful probably of their aimless ingenuity, he adds the caution that dialectic, valuable and necessary as it is, is " like the sword of Hercules in a pigmy's hand " unless there be added to it the accoutrement of the other sciences.
Examples include mink, signal crayfish, common carp and plants such a Himalayan balsam, New Zealand pigmy weed and parrots feather.
The Life of Mammals describes and illustrates the remarkable diversity of mammals from the giant blue whale to the miniscule pigmy shrew.
Himalayan balsam, New Zealand pigmy weed and parrots feather.
Pigmy seahorses on a red gorgonian and a forest of amazing corals.