Squealer (Animal Farm) and could turn "black into white". This is foreshadowing several euphemisms he uses to maintain the control of the barn through difficult times. He is Napoleon's (Stalin's) key to propaganda for the farm (Soviet Union). Throughout the book, Napoleon and Squealer broke the Seven Commandments, the tenets on which governance of the farm is based. To prevent the animals from suspecting them, Squealer preys on the animals' confusion and alters the Commandments from time to time as the need arises. Squealer falls off a ladder while trying to change one of the commandments in the night. A few days later
Whymper tent ones for military use and so mountaineers needed to design and build their own. It was in this context that Whymper designed in 1862–65 and publicised his tent although he did not attempt any commercial exploitation. Whymper pioneered expedition-style mountaineering and his design was larger and much heavier than the Mummery tent designed some 25 years later by Fred Mummery (1855 – 1895) who favoured lightweight climbing. Whymper described his design in "", first published in 1869. The floor area is six feet () square and in cross section it is an equilateral triangle. Whymper said the tent weighed about