Motion Study
A Method for Increasing the Efficiency of the Workman

D. VAN NOSTRAND COMPANY’S SHORT-TITLE CATALOG 25 Lamborn, L. L. Cottonseed Products.....................8vo, *3 00 ----Modern Soaps, Candles, and Glycerin................8vo, *7 50 Lamprecht, R. Recovery Work After Pit Fires. Trans, by C. Salter ................................... 8vo, *6 25 Lancaster, M. Electric Cooking, Heating and Cleaning. .8vo, *1 00 Lanchester, F. W. Aerial Flight. Two Volumes. 8vo. Vol. II. Aerodunetics.................................... *6 00 Vol. I. Aerodynamics .....................................*6 00 ——The Flying Machine...................................8vo, *3 00 ----Industrial Engineering: Present and Post-War Outlook, umo, i 00 Lange, K. R. By-Products of Coal-Gas Manufacture. .nmo, 3 00 Larner, E. T. Principles of Alternating Currents.......nmo, *1 25 La Rue, B. F. Swing Bridges. (Science Series No. 107.). i6mo, 050 Lassar-Cohn, Dr. Modern Scientific Chemistry. Trans, by M. M. Pattison Muir..............................121110, *2 00 Latimer, L. H., Field, C. J., and Howell, J. W. Incandescent Electric Lighting. (Science Series No. 57.)....i6mo, o 50 Latta, M. N. Handbook of American Gas-Engineering Practice. 8vo, *4 50 ----American Producer Gas Practice . ..................4to, *6 00 Laws, B. C. Stability and Equilibrium of Floating Bodies.Svo, *3 50 Lawson, W. R. British Railways, a Financial and Commer- cial Survey ..................................8vo, 2 00 Leask, A. R. Breakdowns at Sea........................nmo, 2 00 ----Refrigerating Machinery..........................i2mo, 2 00 Lecky, S. T. S. “Wrinkles” in Practical Navigation. .. .8vo, *10 00 ----Danger Angle ....................................i6mo, 2 50 Le Doux, M. Ice Making Machines. (Science Series No. 46.) i6mo, o 50 Leeds, C. C. Mechanical Drawing for Trade Schools.oblong 4to, *2 00 ----Mechanical Drawing for High and Vocational Schools, 4to, *1 25 Lefévre, L. Architectural Pottery. Trans, by H. K. Bird and W. M. Birns...........................................4to, *8 50 Lehner, S. Ink Manufacture. Trans, by A. Morris and H Robson .......................................8vo, *3 00 Lemstrom, S. Electricity in Agriculture and Horticulture. ,8vo, *150 Letts, E. A. Fundamental Problems in Chemistry........8vo, *2 00