Robert Louis Stevenson, foreground, on the schooner Equator. (photograph offered) “Behind glass on the Stevenson Museum in Saranac Lake, New York, a black velvet jacket survives, the heather sprig in its prime pocket renewed annually by admirers of its long-dead proprietor. A sturdy woman wouldn’t be capable to struggle on this tight garment. Its wearer should have been a cartoon, with lengthy arms, a slender chest and, to evaluate from the lace-up boots on one other event, lengthy slender legs and arms… in all its levels Robert Louis Stevenson all the time had an opulent jacket. He wore it on the prompting of his prolonged adolescence.…