New Adventures of the Mad Scientists' Club
“Brinley Illustrations by Charles Geer The Telltale TransmitterThe Cool CavernBig Chief RainmakerThe Flying SorcererThe Great Confrontation The Telltale Transmitter © 1968 by Bertrand R. Brinley Illustrations by Charles Geer HENRY MULLIGAN has always had a generous supply of what is called scientific curiosity. Sometimes it gets us into trouble -- like the time Freddy Muldoon and Dinky Poore got kidnapped for being too nosy about something Henry had discovered.
Henry is a great one for thinking ahead, and he always has some new project planned for the Mad Scientists' Club to work on during vacation periods. Last Easter we had about ten days off from school, and he was all ready for it with a carefully thought-out program to study earth tremors in the vicinity of Mammoth Falls. We spent the first couple of days building seismographs that Henry had designed and calibrating them in our clubhouse in Jeff Crocker's barn. It isn't very difficult to build a good seismograph.
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