AIR AND EXERCISE. He has had air and exercise, i.e. he
has been whipped at the cart's tail; or, as it is generally,
though more vulgarly, expressed, at the cart's a-se
BLACK BOOK. He is down in the black book, i.e. has a stain in his character. A black book is keep in most regiments, wherein the names of all persons sentenced to punishment are recorded.
