Published by Scientific American in 1905, the book tells the story of a group of boys who explore Clump Island, a fictional place where boys could be boys. As they explore the island, the young friends are able to test their skills building all kinds of things. As the first in the Scientific American Boy series, this is a collection of science and nature activities for boys told in a fictional story. Includes diagrams and illustrations.

All boys are nature lovers. Nothing appeals to them more than a summer vacation in the woods where they can escape from the restraints of civilization and live a life of freedom. Now, it may appear to be a bit of presumption to attempt to advise the boy camper how to spend his time. Surely the novelty of outdoor life, the fascinating charm of his surroundings, will provide him plenty of entertainment.