I was happy to discover an inadvertent pitch drop experiment in my 100 year old house attic. The blob of glassy pitch was used to seal a spot in the original ro

I was happy to discover an inadvertent pitch drop experiment in my 100 year old house attic. The blob of glassy pitch was used to seal a spot in the original roof sheeting and has made 2 drops underneath so far and is working on a 3rd.