From the PREFACE:

"Euchre is played in so many different ways and under so many different rules that there seems to be a necessity for more rigid and exact Laws than exist at present.

The Laws of Euchre, as here appended, have stood the test of time and received the attention of many scientific Euchre-players.

If any game of cards is worth playing at all, it should be played according to rule in the strictest interpretation, and no favors should be given or expected.

An attempt has been made in these Rules to make the penalties commensurate with the advantage which might be gained by the error. A common instance of this is in the case of a lead out of turn. It often happens that the exposed card is an advantage to the side so offending, and the adversaries have no redress. Here the Whist Law has been applied, allowing the non-offending side the option of two penalties.

Another instance occurs in a lone hand. An exposed card can only benefit the adversaries, consequently no penalty is attached; but should the lone hand lead out of turn, he is supposed to be attempting to gain an advantage, therefore Rule 104 has been adopted."