Wikipedia links
January 19, 2010
3. Arcology
The powder was also applied to solve the longitude problem in the suggestion of an anonymous pamphlet of 1687 entitled “Curious Enquiries.” The pamphlet theorized that a wounded dog could be put aboard a ship, with the animal’s discarded bandage left in the trust of a timekeeper on shore, who would then dip the bandage into the powder at a predetermined time and cause the creature to yelp, thus giving the captain of the ship an accurate knowledge of the time.
5. Rocket mail
On 8 June 1959, [US Navy Submarine] Barbero fired a Regulus cruise missile — its nuclear warhead having earlier been replaced by two Post Office Department mail containers — at the Naval Auxiliary Air Station in Mayport, Florida.
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axe, pen, & bell 