Nintendo tumbler puzzle Nintendo tumbler puzzle The Nintendo tumbler puzzle, also known as the "Ten Billion Barrel" in English and originally in Japanese, is a mathematical puzzle in the style of Rubik's Cube. It was invented by Gunpei Yokoi of Nintendo in 1980 and was covered by (until the patent expired in March 1995 due to non-payment of a maintenance fee). It consists of a "cylinder" of transparent plastic divided into six levels, together with a black plastic "frame". The frame consists of upper and lower discs that are joined together through the middle of the cylinder. The top and bottom levels of
John A. Wilson (sculptor) lion at the museum Wilson made while studying in Boston (1902). The sculpture representing Great Britain in South Africa during the Boer War and was noted as being "an admirable piece of modelling from one of his age". In March 1902 the Royal Canadian Academy of Arts accepted this lion for its annual exhibition in Montreal. Texts Endnotes John A. Wilson (sculptor) John Albert Wilson (1877–1954) was a Canadian sculptor who produced public art for commissions throughout North America. He was a professor in the School of Architecture at Harvard University for 32 years. He is most famous for his