BORN ON THIS DAY

SIR PATRICK MANSON (1844-1922). The Scottish physician and founder of the London School of Tropical Medicine discovered insects such as mosquitoes can host a parasite that can cause disease in humans. His breakthrough came after experiments on his gardener — having mosquitoes feed on his blood before examining them. EMILy POST (1873-1960). The American authority on good manners was known for her bestselling book, Etiquette. Asked if it was acceptable to dunk a doughnut, she said: ‘Any place that would have doughnuts would be like a picnic, where, short of smearing wet doughnuts from ear to ear, you could do pretty much as you pleased.’