You know you are really digging in to a topic when you buy a specialist dictionary for the task. And so I am now the proud owner of the second edition of the Concise Scots Dictionary. I have a range of physical dictionaries – the classic monster Oxford English Dictionary, a dictionary of slang, one for quotations and then French and Spanish dictionaries – but to be honest, I rarely use them these days thanks to the internet. Niche dictionaries are different though; their contents aren’t readily available online. And since I’m writing a book about a Scotsman born in the 1840s who proudly retained and used his Scots dialect,…