Sweet water and bitter

‘Naturalist-in-charge’ was Shel-ton’s title as fisheries expert on board the Tellina, a research vessel. It holds good throughout this excellent memoir, which contains much pertinent information and few idle sentences. By page 30 I’d learned that apple wood makes the best catapult, about the guanine crystals in fish scales, about lampreys, the names of his grandmother’s two Rhode Island Reds, what the lower quadrant signal means to the railways, conjugated valve gear ditto, how to load a muzzle-loader (‘the flinty grains shining as they trickled from the measure at the head of the tooled copper flask’), and the weight of a Duchess class locomotive — 160 tons or about 140 mature Limousin bulls. We have a duty to learn, but few and far are the good teachers. Shelton is among them. This is an improving book in the best possible sense of the word. The author will make peanuts, but civilisation should make a million.