A letter authorizing agents to sell land for $2,200, provided that the party could pay $700 down, and the balance in one, two and three years, does not authorize them to sell for $1,000 down and the balance in one and two years. Speer v. Craig, 16 Colo. 478, 27 P. 891; Bunks v. Pierce, 33 Colo. 440, 80 P. 1036; Rake v. Townsend (Iowa Sup. '05), 102 N. W. 499; Crosthwaite v. Lebus, 146 Ala. 525, 41 S. 853; Engle v. John-son, 34 Ind. App. 593, 73 N. E. 772; Spengler v. Sonnenberg, 88 O. S. 192; Wiggins v. Est. of Chas. E. Coddington, 145 N. Y. Sup. 3, 83 Misc. Eep. 439; Pehl v. Fanton, 119 P. 400, 17 Cal. App. 247; Parker v. Stubbs, 76 S. E. 571, 139 Ga. 46; Gore v. Griffith Realty Co., 169 S. W. 685, 160 Ky. 241; Dahlgard v. Florida Dev. Cor., 187 I11. App. 282; McFarland v. Howell, 143 N. W. 860, 162 Iowa, 140; Compton v. Echols, 120 P. 637, 31 Okl. 151; Turner v. Baker, 74 A. 172, 225 Pa. 359; Cavanaugh v. Conway, 90 A. 1080, 36 E. I. 571; Caldwell v. Scott Bros., 143 S. W. 1192, - Tex. Civ. App. -; Prichard v. Foster, 170 S. W. 1077, - Tex. Civ. App. -; Little v. Gorman, 114 P. 321, 39 Utah, 63; Reitz v. Bryant, 127 P. 583, 71 Wash. 53; Noyes v. Caldwell, 104 N. E. 495, 216 Mass. 525; Nash v. Childers, 160 S. W. 485, 155 Ky. 772; Gillespie v. Rosenbaum, 173 N. Y. Sup. 429; Alexander v. Anderson, 207 S. W. 205, - Tex. Civ. App. -; Nichols & Jackson v. Carson, 220 S. W. 297, - Tex. Civ. App. - . See also Sec. 213.