Inside a very serious and interesting thread http://fuckcombustion.com/threads/study-of-various-vaporizer-brands.20444/ this gem was hiding:
@srama21 mentioned that the reference section of this study was "gold." Here's an excerpt from London's Provincial Medical Journal, dated 1843, titled "On the Preparations of the Indian Hemp, or Gunjah" (I never knew where the term ganja came from!):
"On the 6th of November 1838, one grain of the resin of hemp was administered in solution, at 2pm, to each of these three patients.
At 4pm, it was reported that one was becoming very talkative, was singing songs, calling loudly for an extra supply of food and declaring himself in perfect health…”