PAGE
Mr. Wagner Buys a Goat	7
Billy Whiskers Makes Trouble	16
Billy at the Soda Fountain	21
Billy Gives the Boys a Ducking in the Mill Pond	32
Billy's Adventures in Town	39
Billy Has a Ride in the Police Patrol Wagon	45
Billy Joins the Fire Patrol	51
Billy and Nanny Get into Mischief	65
Billy and Nanny Are Married	71
Billy As a Performer in the Circus	81
Billy and the Snakes	101
What Billy Did on Sunday	109
What Billy Did on Monday	119
What Billy Did on Tuesday	124
What Billy Did on Wednesday	131
What Billy Did on Thursday	136
What Billy Did on Friday	145
Billy Finds Nanny	152

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stant when our penal and reformatory institutions will likewise serve the purpose of clinics for the study of the delinquent, and that such clinical instruction will form part of the curriculum of at least every public prosecutor.

I desire to express my indebtedness to Messrs. Lea and Febiger, the J.B. Lippincott Co., and to the editors of the American Journal of Insanity, and the Journal of the American Institute of Criminal Law and Criminology, for their kind permission to reprint some of the material herein presented.

Before concluding this preface I desire to avail myself of this opportunity of expressing my sincere gratitude to Dr. William A. White, Superintendent of the Government Hospital for the Insane, for his kind and very stimulating advice and encouragement which made these studies possible.

Government Hospital for the Insane,
January, 1916.

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