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The author ( whose previous work was a history of Coca-Cola ) traces the bean from its obscure origins in Ethiopia through its dispersal via Islamic traders , from Reformation Europe 's coffee-klatch craze to the establishment of coffee as the American drink during the Civil War , and beyond through the complex ( and often bloody ) intertwining of coffee cultivation with Latin American governments . The druggist ( whose smooth manners seemed to have been salved over with his own spermaceti ) listened attentively to Barton 's description of Davenport 's illness ; concluded it was typhus fever , very prevalent in that neighbourhood ; and proceeded to make up a bottle of medicine , sweet spirits of nitre , or some such innocent potion , very good for slight colds , but utterly powerless to stop , for an instant , the raging fever of the poor man it was intended to relieve . " A collection of dispatches and essays written over twelve years for this journal ( whose coeditor , it ought to be disclosed , gets top billing in the dedication ) , the volume has anything but an occasional or random feel . General exercise : Show that if you switch the signs of the first column of a reflector ( whose first column entries are non-zero , for ease of proving ) , you obtain an orthogonal matrix Q such that I + Q is invertible . Having thus made evident the meaning of the words , our answer to the objection ( whose strength is a mere fallacy , from the ambiguous sense of the word all ) is easy and facile .