The author provides systematic, close observations of an infant’s early life, tracing sensory, motor, emotional, and cognitive development from the newborn period through independent walking and early speech. Organized by stages, the text examines bodily structure and movements, the emergence of sensation and attention, the progression from grasping to handling objects, the dawn of problem-solving and intelligence, and milestones in locomotion. Emphasis is placed on careful recordkeeping, the gradual formation of skills through perception and action, and the educational and psychological implications of observing development step by step.