Can you help me listen to this sentence? :)

[michael147]

"People should be warned it’s quite difficult to read Humboldt on this matter, because he will spend 15 pages on the obsidian ***"

http://soundcloud.com/michael147-1/21112-1

What does this old man say? ...obsidian and what?

Your answer will be appreciated.

[bhaisahab]

"People should be warned it’s quite difficult to read Humboldt on this matter, because he will spend 15 pages on the obsidian ***"

21112 by michael147 on SoundCloud - Create, record and share your sounds for free

What does this old man say? ...obsidian and what?

Your answer will be appreciated.

I'm afraid I can't make it out.

[bhaisahab]

"People should be warned it’s quite difficult to read Humboldt on this matter, because he will spend 15 pages on the obsidian ***"

21112 by michael147 on SoundCloud - Create, record and share your sounds for free

What does this old man say? ...obsidian and what?

Your answer will be appreciated.

I'm afraid I can't make it out.

[emsr2d2]

I think he says "obsidian and ... um ... porphyry". That is how it sounds to me and the word does make sense in connection with obsidian.

[michael147]

Thank you all. Thank you for the answer.

[Tdol]

I think he says "obsidian and ... um ... porphyry". That is how it sounds to me and the word does make sense in connection with obsidian.

That does make sense, though it sounds a bit like chorphyry to me.

[5jj]

That does make sense, though it sounds a bit like chorphyry to me.

That's how it sounded to me. ems must be right, but I can't hear a /p/.