s. d. PRACTICAL ADVICE FOR MARINE ENGINEERS. G. W. Roberts 50 PRACTICAL DESIGN OF REINFORCED CONCRETE BEAMS AND COLUMNS. W. N. Twelvetrees . 7 6 PREPARATORY COURSE TO MACHINE DRAWING. P. W. Scott . . . . . .19 PRIMER OF TRIGONOMETRY FOR ENGINEERS. W. G. Dunkley . . . ....... .50 PRIMER OF ENGINEERING SCIENCE. E. S. Andrews Part 1, 3s. ; Part 2, 2s. 6d. ; Complete . .46 PRINCIPLES OF FITTING. J. G. Horner . .76 PRINCIPLES OF PATTERN-MAKING ,, . .40 PROPERTIES OF AEROFOILS AND RESISTANCE OF AERODYNAMIC BODIES. A. W. Judge . . 18 QUESTIONS AND ANSWERS FOR AUTOMOBILE STU- DENTS AND MECHANICS. T. H. Russell . .80 RADIO-TELEGRAPHIST'S GUIDE AND LOG BOOK. W. H. Marchant 56 RADIUM AND ALL ABOUT IT. S. R. Bottone . .16 RAILWAY TECHNICAL VOCABULARY. L. Serraillier 7 6 REINFORCED CONCRETE. W. N. Twelvetrees .21 RESEARCHES IN PLANT PHYSIOLOGY. W. R. G. Atkins 90 ROSES AND ROSE GROWING. R. G. Kingsley, . 7 6 ROSES, NEW ....... 9 RUSSIAN WEIGHTS AND MEASURES, TABLES OF. Redvers Elder 26 SCIENCE OF THE SOIL. C. Warrell . . .36 SIMPLIFIED METHODS OF CALCULATING REINFORCED CONCRETE BEAMS. W. N. Twelvetrees . . 9 SLIDE RULE. A. L. Higgins .... 6 SLIDE RULE. C. N. Pick worth . . . .36 SMALL BOOK ON ELECTRIC MOTORS, A. C.C. AND A.C. W. Perren Maycock . . . .50 STARRY REALMS, IN. Sir R. Ball . . . 10 6 STORAGE BATTERY PRACTICE. R. Rankin . .76 STEEL WORKS ANALYSIS. J. O. Arnold and F. Ibbotson 12 6 STRESSES IN HOOKS AND OTHER CURVED BEAMS. E. S. Andrews , f , ., ,.60
