Danny Dunn Box Set, #6 - 10: Danny Dunn and the Swamp Monster; Danny Dunn and the Anti-Gravity Paint; Danny Dunn, Time Traveler; Danny Dunn on the Ocean Floor; Danny Dunn and the Weather Machine

Danny Dunn Box Set, #6 - 10: Danny Dunn and the Swamp Monster; Danny Dunn and the Anti-Gravity Paint; Danny Dunn, Time Traveler; Danny Dunn on the Ocean Floor; Danny Dunn and the Weather Machine. ABOUT Danny Dunn and the Swamp Monster: "Professor Bullfinch and Doctor Grimes take Danny and his friends to the beginning of the Nile River in Africa to investigate local legends of a swamp monster. Despite unforeseen calamities, a new, rare species of electric catfish is discovered." ABOUT Danny Dunn and the Anti-Gravity Paint: "Through a mishap in Professor Bulfinch's laboratory, Danny accidentally creates an anti-gravity paint. In time, the government constructs a spaceship which uses the paint as a propulsion system. The spaceship is launched prematurely after Danny and Joe follow Professor Bullfinch and Dr. Grimes on a tour of the ship. A mechanical failure dooms the four to a trip out of the Solar System unless they can repair the ship. Should they fail in this, they will drift too far from the Sun and freeze to death." ABOUT Danny Dunn, Time Traveler: "Professor Bullfinch's experiment with a time travel invention is being secretly observed by Danny, Joe, and Irene. The youngsters are startled by the appearance of a second Joe. During the following confusion, the time travel device transports them all into the past. Aided by Benjamin Franklin, the Professor works to return them to their present. While in the past, the youngsters explore the society of American life under British rule, only to find one of their number in danger of being marooned in the past." ABOUT Danny Dunn on the Ocean Floor: " Another accident in Professor Bulfinch's laboratory, instigated by Danny, results in the creation of a transparent, resilient material. The material proves useful in creating a bathysphere, and Professor Bulfinch, along with his friend Dr. Grimes, Danny, Joe, and Irene, descend into the Pacific Ocean on an experimental voyage. Unfortunately, the bathysphere's pilot is rendered unconscious, and the bathysphere becomes trapped in a cave. On their journey, the submarine is examined by a giant squid and attacked by a large shark." ABOUT Danny Dunn and the Weather Machine: "Danny accidentally discovers that an ionic transmitter Professor Bulfinch has been working on can be used to create miniature rainclouds."