But the final ascent will test the endurance of the climbers to the utmost. Many people have found the last 1,000 feet of Mont Blanc more than they could accomplish. The last 1,000 feet of Mount Everest will only be conquered by men whose physique is perfect, and who are trained and acclimatised to the last possible limit, and who have the determination to struggle on when every fibre of their body is calling out--Hold! enough! The struggle will be a great one, but it will be worth the while. To do some new thing beyond anything that has been previously accomplished, and not to be dominated by his environment, has made man what he is, and has raised him above the beasts. He always has been seeking new worlds to conquer. He has penetrated into the forbidding ice-worlds at the two poles, and many are the secrets he has wrested from Nature. There remains yet the highest spot on the world's surface. No doubt he will win there also, and in the winning will add one more victory over the guarded secrets of things as they are. APPENDIX I THE SURVEY BY MAJOR H. T. MORSHEAD, D.S.O. The personnel selected to form the Survey Detachment under my charge were as follows: Brevet-Major E. O. Wheeler, M.C., R.E., Mr. Lalbir Singh Thapa, Surveyors Gujjar Singh and Turubaz Khan, Photographer Abdul Jalil Khan, sixteen khalasis, etc. The tasks allotted to the detachment were:-- (1) A general survey of the whole unmapped area covered by the Expedition, on a scale of 1 inch to 4 miles. (2) A detailed survey of the immediate environs of Mount Everest on the scale of 1 inch to 1 mile. (3) A complete revision of the existing 1/4-inch map of Sikkim. With the exception of a few rough notes and sketches by early travellers and missionaries in the seventeenth and eighteenth centuries, our first knowledge of the Southern portion of the Tibetan province of Tsang dated from the epoch of the Survey of India by trained native explorers in the middle of the nineteenth century. Thus, much of the area visited by the Expedition in 1921 was traversed by the explorer Hari Ram during the course of his two journeys in 1871-2 and 1885 respectively. At that time, however, foreign surveyors were not regarded with favour in Tibet; work could only be carried on surreptitiously, and the resulting map merely consisted of a small-scale route traverse which gave no indication of the surface features beyond the explorer's actual route.