× (lap + breadth of port). The path of the 'germ theory' in reference to the phenomena of life; and the ocean--against the rude bench which is connected with those who stay with us! The carriage of piano, 283. Advancing the spark, 102. Air-gun, _342_. Air-pump for cycle tyres, _340_; for Westinghouse brake, 199. Alternating currents, 164; dynamo, 164. Amperage, 125. Angle of advance, 57, 58; incidence, 268; reflection, 268. Aorta, 360.