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THE CIGARETTE
VIGNETTES OF FAMOUS SCIENTISTS
THE ELECTROENCEPHALOGRAPH
MEDICAL MYSTERY
MYSTERY OF THE DERO TYPESETTER
SCIENTIFIC MYSTERIES
HOW TO USE THE SHAVER ALPHABET
PROOF
PETRIFIED TREE STUMP—OR NOT?
NOTES ON SUBTERRANEAN SHAFTS
WHAT MAN CAN IMAGINE...
VISITORS FROM THE VOID
MYSTERY OF THE PERUVIAN GIANTS
WHO WAS VIRGILIUS?
THE MAGNETIC PENDULUM
DISCUSSIONS
The complete story of the Mystery that rocked the science fiction world!
Front cover painting by Robert Gibson Jones |