Milton Bradley Colors for Seashore's Elementary Experiments in Psychology

New York and Chicago: Henry Holt and Company, 1908. Good. Toned. Chipping and short tears to envelope, including one larger closed tear spanning approx. 4 inches. Minor damage or creasing to a couple of the colored slips. Housed in the original printed envelope, this item is comprised of thirty-nine (39) individual slips of colored paper produced to be used in conjunction with Carl E. and Robert Holmes Seashore's "Elementary Experiments in Psychology" (Henry Holt, 1908). The book contains sixteen experiments to accompany an introductory course in psychology. Several investigate vision and visual processes (hence the need for the colored slips here). Original printed envelope measures 3" by 4.75"; colored slips range in size from approx. 1" by 1" to 2.5" by 2.5