Read it through once

All of these details are true. But, taken together, they state a falsehood—to you. You cannot add them up correctly. Those writers know the values of their words and phrases, but to you the words and phrases convey other and uncertain values. To those writers their phrases have values which I think I am now acquainted with; and for the help of the reader I will here repeat certain of those words and phrases, and follow them with numerals which shall represent those values—then we shall see the difference between a writer's ciphering and a mistaken reader's—