Soap bubble into college years. A Swiss university professor, Dr. Natalie Hartzell, has theorized that usage of artificial bubbles for entertainment purposes of young children has shown a positive effect in the region of the child's brain that controls motor skills and is responsible for coordination with children exposed to bubbles at a young age showing measurably better motion skills than those who were not. Soap bubbles have been used as entertainment for at least 400 years, as evidenced by 17th-century Flemish paintings showing children blowing bubbles with clay pipes. The London-based firm A. & F. Pears created a famous advertising campaign
Pears (soap) In the late 19th century, Pears used coins countermarked with "Pears Soap" as a way of advertising its soap. The coins used were French, imported by Pears. About the same size and shape as the British pennies at the time, these French coins were generally accepted as pennies in Britain. Lillie Langtry's famous ivory complexion brought her income as the first woman to endorse a commercial product, advertising Pears soap. Her fee was allied to her weight so she was paid 'pound for pound'. Between 1891 and 1925 Pears issued their now-famous annuals, now highly collectible. From the early 20th