frank
"To superscribe (a letter, etc.) with a signature, so as to ensure its being sent without charge" (OED). According to The History of the British Post Office, franking was a privilege that allowed sending letters without being charged. However, over time, this privilege was highly abused and ultimately by 1840 this privilege was finally abolished. Franking free letters for others not in Parliament and for non Parliament purposes was so serious a Franking Department was created to inspect such letter (Hemmeon, The History of the British Post Office, p. 57).

. For the lawyers that "drove about" in these carriages, Austen is suggesting the connection of carriages relating lawyers to wealth and fashion.
An example of an early 19th century cottage, this one being the birthplace of author Thomas Hardy





"A type of light four-wheeled open carriage, usually drawn by a pair of horses, and having one or two seats facing forward" (OED).

This implies that these were shops which primarily sold candles, but also sold various products like a convenience store.
but would grow to be a very large dog.

Cairn Terrier,
and Norfolk Terrier. 





