1. Logarithmic Tables   Kirkpatrick Macmillan   Johann Gutenberg   Dr. Alan M. Turing   John Napier   Hint Half-n-half Clue   2. Rabies Vaccine   Louis Pasteur   Sir Frank Whittle   Gottlieb Daimler   Robert Wilhelm Von Bunsen   Half-n-half Clue   3. Microscope   Karl Benz   Z. Janssen   Dr. William Stokes, Rene Laennec   Johann Gutenberg   Half-n-half Clue   4. Refrigerator   James Harrison, Alexander Catlin   Bardeen, Shockley, Brattain   Gottlieb Daimler   Robert Wilhelm Von Bunsen   Half-n-half Clue   5. Stethoscope   John Napier   Dr. William Stokes, Rene Laennec   John J. Loud   Lewis E. Waterman   Half-n-half Clue   6. Bakelite   Sir Isaac Pitman   John Napier   Roger Bacon   Leo H Baekeland   Half-n-half Clue   7. Shorthand   Roger Bacon   Sir Isaac Pitman   Lewis E. Waterman   Dr. William Stokes, Rene Laennec   Half-n-half Clue