I am prevented from setting my black cap at Mr. Maitland by his having a wife & ten Children.
What was the significance of JA's cap being black? Did older women wear black caps instead of white?
And in the postscript:
I scandalized [Mrs. Busby's] nephew cruelly; he has but three Children instead of Ten.
What did JA mean by "scandalizing him cruelly"?
I'm reminded of "Northanger Abbey": A family of ten children will be always called a fine family, where there are heads and arms and legs enough for the number.