A 1902 article from Cassier's Magazine, originally presented to the New England Cotton Manufacturers' Association, arguing that lubricants for textile mills should be chosen by practical trial rather than by friction-testing machines or chemists' reports. It classifies oils (fixed, volatile, residual, distillate) and gives recommendations for each class of mill machinery: steam cylinders, engines, dynamos, shafting, openers, pickers and cards, drawing frames, looms, spindles (bath, Sawyer open, mule, twister) and top rolls. It closes with the argument that savings in power from good lubrication outweigh oil cost.