Seva, Is this link working for you? https://cornell.box.com/s/rafx7ue412ylu7svl0j6 Coincidentally, I just made contact with the Cornell Chemistry Dept yesterday. I had set this issue aside for a while. -Karl On 9/19/14 8:23 AM, seva, soundcurrent mastering wrote: > yep. login wall. > > On Wed, Jul 23, 2014 at 5:18 PM, Richard L. Hess <[log in to unmask]> > wrote: > >> Hi, Karl, >> >> This is very interesting. >> >> The Wikipedia article discusses acidic fumes/vapors are emitted by PVC >> (the basefilm of some early 1940s and 1950s tapes) and polyurethane (a >> eidely used binder) as well as wood, cork, non-archival cardboard, paper, >> and cotton. >> >> It is good to know it's a salt, but, unfortunately, the photo is behind a >> login wall. >> >> Cheers, >> >> Richard >> >> >> >> On 2014-07-23 3:41 PM, Karl Fitzke wrote: >> >>> Still hoping to engage someone at Cornell with mass spectrometry >>> capability, but today Mycologist Dr. Kathie Hodge of Cornell Plant >>> Science generously put a few tapes under the microscope and gave us the >>> representative photo at the link below. We looked even closer and it >>> is surely some kind of salt. >>> >>> Kathie also shared the finding with a snail taxonomist, who said that >>> this looks like Byne's disease. >>> >>> https://cornell.app.box.com/files/0/f/2153689224/1/f_19287922333 >>> >>> http://en.wikipedia.org/wiki/Byne%27s_disease >>> >>> -Karl >>> >>> -- >> Richard L. Hess email: [log in to unmask] >> Aurora, Ontario, Canada 647 479 2800 >> http://www.richardhess.com/tape/contact.htm >> Quality tape transfers -- even from hard-to-play tapes. >> >> -- Karl Fitzke Audio Engineer Macaulay Library Cornell Lab of Ornithology 159 Sapsucker Woods Road Ithaca, NY 14850 607-254-1100 [log in to unmask] Our Mission: To interpret and conserve the Earth's biological diversity through research, education, and citizen science focused on birds.