"Now, it's a very singular circumstance, your ladyship," says Mr. Guppy, "though one of those circumstances that do fall in the way of us professional men--which I may call myself, for though not admitted, yet I have had a present of my articles made to me by Kenge and Carboy, on my mother's advancing from the principal of her little income the money for the stamp, which comes heavy--that I have encountered the person who lived as servant with the lady who brought Miss Summerson up before Mr. Jarndyce took charge of her. 
"Now, by chance," says Mr. Guppy, "through one of those circumstances that fall in the way of us professional men, I have met the person who lived as servant with the lady who brought Miss Summerson up. 