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A selection of my photographs, many from Edinburgh throughout the year.   Also photos from Scotland, London, Iceland, Italy, Hong Kong and elsewhere    Many old maps of Edinburgh (Old Town, New Town, while City), Leith and Newhaven.  Includes several old transport maps and a comparison of old maps with recent aerial photos.   Old engravings, mailly of Edinburgh scenes.  Some from the 1820s, some from the 1890s,  some others - includes many hand-coloured examples from the 1820s.   News from Edinburgh today  -  Events, Collections, Buildings and Gardens, Transport   This site includes     1. Post card portraits taken in studios in Edinburgh:    2. Post card views either takeen/published by Ediburgh photographers or views of Edinburgh, or both.y Edinburgh    Views of Edinburgh, grouped into three sections:     1. Street views:    2. Buildings:    3. Around Edinburgh   Views of transport around Edinburgh  -  Horse drawn trams and buses, cable cars, electric trams, buses and a few railway photos.  Also several maps of Edinburgh's bus and tram routes.   Summary of the updates added to this site each month since the site was launched   Frequently Asked Questions

 

 

 

The Wet Collodion Process

Thomas Rodger

Below are some extracts from Thomas Rodger's paper On Collodion Calotype,
 read to the Royal Scottish Society of Arts in Edinburgh in February 1854.

2

Prepare Gun Cotton

Add the ingredients

"Take five and a half ounces of nitrate of potash in powder and add to it in a convenient size bowl ten ounces, by weight, of common commercial sulphuric acid"

"Stir the whole with a glass rod, and introduce as much finely-carded cotton, about two drachms, as will absorb the mixture and be at the same time thoroughly charged with it."

Put a cover on the vessel, and allow the action to go on for five minutes.  Then remove the cover, and with a glass rod, poke and separate the fibres of the cotton"

The Result

"If the action be too intense, which is known by the extreme heat of the surface of the vessel, moderate it by applying a cloth soaked in cold water to its external surface."

"Then let the cotton be plunged into cold water, and washed so thoroughly that not the slightest trace of acid can be detected.  It should then be dried at a very low temperature, and put past in a bottle for use."

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The Wet Collodion Process - as described by Thomas Rodger Jun.

   

 

Links to Other Pages

EdinPhoto - Home Page      Please send me an e-mail ...  with your questions, comments, suggestions or news.      At any time, you can search for a word  -  perhaps a photographer's name or a photographic topic.  The search will produce a list of pages on the EdinPhoto web site where this word appears.            At any time, you can search for a word  -  perhaps a photographer's name or a photographic topic.  The search will produce a list of pages on the EdinPhoto web site where this word appears.

Photographs and Other Images  -  These include portraits of photographers  -  photographic outings -  Princes Street views  -  Newhaven Fishwives  -  etc.  Early Photography in Edinburgh  -  Talbot, Brewster, Hill & Adamson, Early Professional Photographers in Princes Street, etc.  Professional Photographers in Edinburgh  -  1840 to 1940  -  Their names, dates of business and studio addresses.  The Photographic Society of Scotland  -  1856 to 1873  -  Lectures, Exhibitions, Outings, etc.  The History of Edinburgh Photographic Society  -  1861 to date  -  Lectures, Exhibitions, Outings, Poems, etc.  EPS Publications - EPS Handwritten Records  -  Photographic Journals  -  Trade Directories  -  Books  -  etc.  Thanks to all who have encouraged and supported me in creating the EdinPhoto web site  -  including descendants of photogrpahers  -  researchers  -  providers of photographs and other material  Background notes on the research thal led up to the creation of this site  -   together with lists of new material added to the site since its launch.  Brief comments on how this site might be used  -  Just browsing?  -  Seeking specific information?  Please add your questions, suggestions or other comments to the Guest Book.  Links to other web sites  -  Photographic Societies  -  Photographic History  -  Family History  -  etc.  Click here to find the link to the Edinburgh Photogrpahic Society web site.  Details of who owns the copyright of photographs and other mateiral on this web site.

A selection of my photographs, many from Edinburgh throughout the year.   Also photos from Scotland, London, Iceland, Italy, Hong Kong and elsewhere    Many old maps of Edinburgh (Old Town, New Town, while City), Leith and Newhaven.  Includes several old transport maps and a comparison of old maps with recent aerial photos.   Old engravings, mailly of Edinburgh scenes.  Some from the 1820s, some from the 1890s,  some others - includes many hand-coloured examples from the 1820s.   News from Edinburgh today  -  Events, Collections, Buildings and Gardens, Transport   This site includes     1. Post card portraits taken in studios in Edinburgh:    2. Post card views either takeen/published by Ediburgh photographers or views of Edinburgh, or both.y Edinburgh    Views of Edinburgh, grouped into three sections:     1. Street views:    2. Buildings:    3. Around Edinburgh   Views of transport around Edinburgh  -  Horse drawn trams and buses, cable cars, electric trams, buses and a few railway photos.  Also several maps of Edinburgh's bus and tram routes.   Summary of the updates added to this site each month since the site was launched   Frequently Asked Questions

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