collection and preservation

The Boxcar Children have entered the Ruby Hollow Gem Mines annual gem-hunting competition. With a little instruction and the right gear, the Aldens have everything they need to become real rock hounds! They have a natural talent for rock-finding, and its not long before Jessie makes a fabulous find. But before she can enter her ruby in the competition, it disappears! Could there be a thief at the mine? Now, instead of digging for rocks, the Aldens are digging for clues. Who wants to win the contest so much that they would steal from the Aldens? The children dont know, but theyre determined to find out!.

Photographs and text provide a comprehensive introduction to geode deposits, and discusses what geodes are, the miningprocess, thunder eggs, and more.

A guide to paleontology including where to search for fossils; how to scan for textures and shapes; how to properly extract and protect finds; advice on what to wear and which tools to carry; illustrations for identifying and comparing fossil finds; and listings of fossil exhibits, clubs, and sites.

"Introduces rocks to young readers through leveled text and related photos"--Provided by publisher.

Jake, a boy who has collected animal bones since he was six, shares his collection, and presents information on collecting and identifying animal bones, and learning about an animal's life through its bones.

When Dryer and Danforth set out to explore the Antarctic continent, they encounter a strange civilization that traveled to Earth from the far regions of space millions of years ago, and now Dryer and Danforth are sent to be Earth's ambassadors to space.