Zim, Herbert Spencer

A brief introduction to alligators and crocodiles, less dangerous than supposed, living fossils from the Age of Reptiles.

Pictures 129 common birds, identifying their flight ranges, size, and appearance. Includes a table listing migration dates and nesting and feeding habits.

Pictures 129 common birds, identifying their flight ranges, size, and appearance. Includes a table listing migration dates and nesting and feeding habits.

A guide to North American insects which gives popular name, describes life and reproduction cycles and feeding habits, and includes a range guide.

Includes information on collecting and identifying minerals, and sections on metallic, nonmetallic, gem and rock-forming minerals, and on igneous, sedimentary and metamorphic rocks.

A guide to North American insects which gives popular name, describes life and reproduction cycles and feeding habits, and includes a range guide.