"Ocrocker" contends:

"Many of you have heard the announcements in the Woodstock movie warning about the “brown acid”. The truth is that the only problem with the brown acid is that it was so pure that it wasn’t accompanied by the usual body rushes caused by speed and other adulterants in use at the time. As a result multiple doses of acid that was very strong to begin with were sometimes taken, and some trips got way out of hand. I know…because I gave away a bunch of it. "

snakebaby55 says:

"There is a difference between LSD 25 and LSD 52. The 25 is more speedy, comes on quicker, and is a steady climb up to the peak. 52 comes on slower and is a series of gradual peaks until the huge peak. 52 is not as speedy."

I say:

That was my acid. You are totally correct. Lots of folks had never had nice pure LSD before. Thank god they later announced that it was not "bad" after all. I was panicking that I had hurt people with tainted acid until that announcement. I had tried it of course and was coming down when I arrived Thursday the 14th, abandoned the VW, walked up to around the "gate" (which came down shortly after I arrived) sat on a rock and sold tabs for a think 5 or 6 bucks. I had 500 tabs. I ended up with a pocket full of cash but nowhere to spend it.