A SANDBURR is a foolish, small vegetable, irritating and grievously useless. Therefore this volume of sketches is named Sandburrs. Some folk there be who apologize for the birth of a book. There's scant propriety of it. A book is but a legless, dormant creature. The public has but to let it alone to be safe. And a book, withal! is its own punishment. Is it a bad book? t...