[alt-photo] Re: wet-plate collodion

[Jeremy Moore]

Joe,

What's the reasoning behind this? I haven't heard this suggestion
before--that they are wet plate collodion positives backed with brass powder
as opposed to silver gelatin dry plate backed with gold leaf in a banana oil
suspension.

On Tue, Apr 13, 2010 at 10:31 PM, Joseph Smigiel <smieglitz at gmail.com>wrote:

> I believe Curtis' Orotones were actually ambrotypes backed with a brass
> powder.
>
>
>
> On Apr 13, 2010, at 9:39 PM, Bob Barnes wrote:
>
>  PS; what were Sherriff Edward Curtis'  (sorry for the oblique humous)
>> gold-tone prints?
>>  PSS; your arcticle on Unblinking Eye really encouraged me, but the
>> toxicity is still intimidating.
>> Bob
>>
>>
>>
>>