"Posting in all its branches" is a phrase I've seen a number of times in 19th century British sources.
A google search (regular and books) gives context mostly in reference to traveling or communication, but I can never tell exactly what is involved (it's understood by contemporary readers, of course, so no need to explain!). 'Posting' makes me think it might be mail or a telegram, but it be by coach or train or horse, I don't know what else (why mention all the branches if there are only two? I'm expecting a number of branches, just I don't know what all the possibilities could be).
- From google books - mostly located in advertisements for lodgings.
- In a biography about Jane Austen:
...it is only at very large establishments, or those in the most out-of-the-way districts where trains come not, that "posting in all its branches" forms part of the land lords boast
What I hope to find out is:
- What is being posted? Is it mail things like letters and packages, or is it travel?
- What are the branches? Does it mean train, carriage, horse, foot? Or does it mean local, national, international? Or does it mean letters/small packages or traveling individuals with luggage? or what?
- What would be advertised if the posting were not available in all branches? 'Limited posting' ?
- If it is not so literally meant, what does the phrase mean?
- What is time frame for this phrase being used? (Google ngrams, despite having ostensibly the same data source as books.google.com, gives -0- instances of the phrase, so I can't see a usage timeline).