WILD WILD WEST

12345678
Across
  1. 5. if you find a substitute you can ... something
  2. 6. if you move around in a country or between countries
  3. 7. very thin
  4. 8. an invention which made it possible to send messages across the continent without delay
Down
  1. 1. new inventions or rules
  2. 2. a pattern of signals or letters that conveys a message
  3. 3. ghosts can....suddenly out of a wall
  4. 4. immediately