THE MASTER MIND OF MARS Book 6 in the Barsoom Series CONTENTS I. A Letter II. The House of the Dead III. Preferment IV. Valla Dia V. The Compact VI. Danger VII. Suspicions VIII. Escape IX. Hands Up! X. The Palace of Mu Tel XI. Phundahl XII. Xaxa XIII. The Great Tur XIV. Back to Thavas XV. John Carter CHAPTER I A LETTER HELIUM, June 8th, 1925. MY DEAR MR. BURROUGHS, It was in the Fall of nineteen seventeen at an officers' training camp that I first became acquainted with John Carter, War Lord of Barsoom, through the pages of your novel A Princess of Mars. The story made a profound impression upon me and while my better judgment assured me that it was but a highly imaginative piece of fiction, a suggestion of the verity of it pervaded my inner consciousness to such an e