Termites, insects improperly called "white ants";
their habits in relation to the history of the soil, [100]
Terracing, how employed to prevent waste of soil, [71]
Texas, you can still find armadillos there, [120]
Trees, their settled order of march into new lands, [8];
how the winds and the rains help trees to climb the western slopes of mountains, [55];
how waste of trees causes waste of soil, [69]
Turtles, how turtles differ from tortoises;
habits of both these water farmers, [137];
how turtles differ from crabs in their notions about laying eggs, [142]
Viscachas, South American relatives of the prairie-dogs;
their villages and their athletic fields, [127];
how they rescue their buried comrades, [128]
Volcanoes, their contribution to soil making, [39];
how they help the plant world to get its breath, [40];
team-work between volcanoes and lichens, [235]
Voles, four-footed farmers who fill root cellars for the winter, [212]
Wasps, their habits in relation to the history of the soil, [102]
Weather and the groundhog's shadow, [219]