232 THE 1RK1GAT10X AGE. 



would give you if you got it all. Then calculate as best you can the 

 proportion of it you are likely to get. Even then you had better not 

 risk any valuable trees or time on it until trial will show you how it 

 will stand long draining. . 



OVER ESTIMATING THE WATER SUPPLY IS A COMMON FAILING 



AMONG US 



and it has been very foolish because very unnecessary. Don't be 

 afraid to know the truth about your favorite enterprise. You had 

 better recognize at once the fact that a reliable water supply is not 

 found in every gulch, that it costs good hard earned cash and is well 

 worth it. 



Much money is wasted in pumping plants by too small pipes and 

 too many right-angled bends with other causes of needless friction. 

 In over twenty years observation of windmills and engines I have 

 seen but one where the pump was not working against almost as 

 much friction as gravity and often much more. The result either 

 was that the pump was not raising half what it could raise or that it 

 was costing twice as much for fuel as it should cost. It is a common 

 impression that it takes four times the power to lift water in a four 

 inch pipe than it does to lift it in a two inch. So it does if you have 

 them both full and running at the same velocity. But it is quite the 

 reverse if you are lifting the same amount of water in each. A four 

 inch pipe will carry nearly six times the quantity that a two inch will 

 carry. The lift against gravity will be the same in each but in the 

 larger pipe the quantity of water being the same 



THE STRUGGLE AGAINST FRICTION WILL BE NEARLY THIRTY-SIX 



TIMES LESS. 



This is a most important item in your fuel account on a long pipe 

 against which the difference in cost of the larger pipe may be very 

 trifling, The lift against gravity depends entirely on the diameter of 

 the piston head and if you lift it into a fifty inch pipe or a thousand 

 inch it only affects the time of filling it. But the difference in the 

 loss by friction is enormous. All these things should be calculated 

 before you order your plant. 



There are other points on which you are already so well informed 

 that I may better spend the rest of our limited time on a subject 

 that I have found of great interest to a great many people. Consider- 

 able money will be spent on it this year. I believe I know as much 

 about it as any one and that is 



THE DIVINING ROD OR WATER WITCH. 



Within ths past ten years this ancient thing has gained hosts of 

 believers and in the last twelve years I have tried thousands of 

 experiments with it on all kinds of ground and carried it hundreds of 

 miles in wagons, cars and on foot. 



Like nearly all persons who have a profound respect for science 



