Most people to-day are familiar with the elephant at the Zoo, and it is curious to recall that this vast, flabby-looking creature was first seen by Western men as a terrible and well-nigh irresistible weapon of war. When Alexander's men refused to follow him beyond the river Hyphasis in 326 b.c., one of the chief causes of their fear was a rumour that the people on the other side owned a squadron of ‘particularly large and courageous elephants’—six thousand of them, says Plutarch: and the Macedonians had recently seen all they wanted of elephants in their battle against Porus on the river Hydaspes. They had done their best against them, and indeed had won the day; but it had been a grim business. ‘The elephants’, we are told, ‘employed their massive bulk and their great strength in terrifying fashion; some men perished when they were trampled under foot, weapons and all, and their bones crushed to pieces; others were caught up in the elephants' trunks, lifted high in the air and dashed back to earth—and came to a shocking death. And many men were instantly killed on being gored by the beasts' tusks, and pierced clean through the body.’