After delivering my essay before the Civil Engineers' Club of the Northwest, the following letter was forwarded to me by the secretary:
Brownsville, Tenn.
Gentlemen:—I notice that at a meeting of your honorable Club, Mr. Latimer read an essay upon the subject of the "Divining Rod," and seemed to be at a loss to know how to tell whether the rod's movements pointed to or indicated any particular substance under the earth. I am now seventy-three years of age, and have been studying and experimenting with it since twenty years of age. I am not satisfied what causes the motion of it in my hands, but by experimenting, I can tell to a certainty whether I am over any substance, either water or mineral, or whether it is sulphur, salt or any other kind of water.
I am glad that investigation in this is being made by scientific men, and hope some day it may profit man. For any information you may want, address me at Brownsville, Tennessee.
Very respectfully,
Harry Sangster.
Upon receipt of this letter from Mr. Sangster, I wrote to him asking him to explain to me upon what principle he could discover the difference between metals and water, and between one kind of water and another. To this I have received the following answer, just in time to add it to this publication:
Brownsville, May 10, 1876.
C. Latimer, Esq., Cleveland, Ohio: