“The second [Pony Express] departure for California would be Friday, April 13, and regularly thereafter on Friday, to avoid a delay over the Sabbath of letters from New York and the East. . . .
“Letters would be received up to 3 o’clock Monday afternoon of each week, at the company office, Room No. 8, Continental Bank Bldg., and telegrams up to 7 o’clock Thursday evening at the office of the American Telegraph Co., 2 ó Wall St.”