LIST OF PLATES. 



I. PORTRAIT OF AUTHOR. .... frontispiece 



II. THE FRAMEWORK OF THE MACHINE . to face page I 



III. THE MUSCLES OF THE MACHINE . .'.',, 43 



IV. BAD AND GOOD SEAT . . . . ,, 80 

 V. THE ARAB TYPE . . . . . . ,,86 



VI. " TONGS-ACROSS-A-WALL " THE MODERN 



MILITARY SEAT ,, 93 



VII. THE EXTREME CHAIR-SEAT THE EXTREME 



FORK-SEAT ,, 95 



VIII. THE OPEN SEAT AND HIGH PACK THE 



CLOSE SEAT AND FLAT PACK . ,, 97 



