Any individual gifted with a fair amount of determination, is absolutely certain to develop his physical powers at an extraordinarily rapid rate and with the most happy results to his general health and mental powers and activity, by following with intelligence your system. As you very rightly say, it is only by bringing the brain to bear upon our exercises that we can hope to produce the best results with the shortest possible expenditure of time. The absence of expensive and cumbrous apparatus is no small recommendation of your system, and you are thoroughly in the right when you assert that lasting muscular development, and consequent strength, can be best produced by the constant and energetic use of light dumb-bells, employed in a sound and scientific manner. Believe me, yours very truly, (Signed) G. M. Fox, Lieut.-Colonel, H.M. Inspector of Gymnasia in Great Britain. Professor Eugen Sandow, New York, U.S.A. [1] The book referred to is the large one which was published some years ago, and which is now out of print. LETTERS AND PHOTOGRAPHS OF PUPILS. In the following pages will be found a selection from many thousands of letters which have been addressed to me by pupils who have already profited from my system of Physical Culture. Attention is specially directed to the measurements before and after training, showing the actual progress made in muscular development. VACHWEN, MARLBOROUGH ROAD, WATFORD, _March 11th, 1899_. MR. SANDOW. DEAR SIR, _I have just completed a course of lessons at your “School of Physical Culture,” from which I have derived untold benefit. Through the greater part of last year I was so ill that for some time it was feared I might go into consumption. I was medically treated, and at length permitted by my doctor to try what your exercises would do._ _I entered your School with weak heart, weak lungs, digestion sadly impaired. After three lessons, with persistent home work, I began very slowly to gain strength and an appetite, and now, at the end of my course, I am quite a new creature--full of vitality and energy._ _The upper part of the lung, which was the chief cause of my trouble, is quite healed and healthy. I never know now what it is to feel pain and tightness in the bronchial tubes, from which I constantly suffered in the past. My digestive organs too are quite well._ I have gained in weight 7 lbs. ” ” round the neck 1 in. ” ” in the chest (contracted) 3½ ins. ” ” ” ” (expanded) 4 ins. ” ” ” forearm 2½ ins. ” ” ” upper arm 2½ ins. ” ” in lung capacity 100 cbc. ins.