Author and publisher now feel that the time has arrived for a work dealing with the question on a broader basis. For the past year, therefore, the former has been engaged upon an entirely new work, in which has been brought into one focus from his former works what is applicable to modern conditions, together with the result of practical experience, and research work of later years, dealing with the entire problem--productive, technical, and commercial. In it will be found a vast amount of new material, and special attention has been given to future developments, whether on extensive or intensive lines. LONDON: EDWARD ARNOLD, 41 & 43 MADDOX STREET, W Transcriber’s Notes Obvious errors in punctuation have been fixed. Page 7: “D’AZINCOURT” changed to “D’AGINCOURT” Page 22: “all German soliders” changed to “all German soldiers” Page 31: “on the balks” changed to “on the baulks” Page 50: “first gas attac” changed to “first gas attack” Page 62: “eight o’cloc” changed to “eight o’clock” Page 125: “French Arym” changed to “French Army” Page 284: “in comparsion” changed to “in comparison”