New Zealand, home of a bird that is a very late riser but nevertheless gets the worm, [167]
Oven-Birds, of South America, how they differ from the American oven-birds, [172];
their remarkable adobe homes and their friendliness toward man, [172]
Pebbles, how they help feed the Wisconsin cows, [239], [240];
teamwork between mountains and pebbles, [240]
Philippines, one of the regions where mound-birds live, [174], [176]
Ploughing, Nature's system: work of the squirrels, [14];
of the elephants and their ancestors among prehistoric monsters, [27];
of the Moas, [28];
of the Dinosaurs, [29];
storm ploughs of the winds, [46];
use of the plough to prevent soil waste, [70];
the great ploughs of the Ice Ages, [237]
Pocket Gopher, Thompson-Seton's "master ploughman," [128];
why he has that queer expression on his face, [128];
how he spends the winter, [218]
Pot Holes, soil-grinding mills of the rivers, [61]
Prairie-Dog, his watch tower and how it protects him from his enemies, [126];
his great sociability, [127]
Rains, their work in making and transporting soil, [44], [55]