It has been said that if a contract is bilateral and on its face purports to set out the mutual undertakings of the parties, the presumption that it sets out the entire agreement, and that they had abandoned all their prior negotiations is so strong that if it ran be overcome at all this can be done only by the clearest proof. Foster v. Lowe, 131 Wis. 54, 110 N. W. 829.

2 Colorado. Mackey v. Magnon, 28 Colo. 100, 62 Pac. 945 [affirming, 54 Pac 907].

Kentucky. McKegney v. Widekind, 69 Ky. (6 Bush.) 107.

Massachusetts. Loveland v. Epstein Drug Co., 227 Mass. 311, 116 N. E. 570.

Nebraska. Roden v. Williams, 100 Neb. 46, L. R. A. 1917A, 415, 158 N. W. 360.

Washington. Fairbanks Steam Shovel Co. v. Holt, 79 Wash. 361, L. L A. 1915B, 477, 140 Pac. 394.

3 Van Doren Roofing & Cornice Co. v. Guardian Casualty & Guaranty Co., 99 Wash. 68, 168 Pac. 1124.

4Kreitz v. Gallenstein, 170 Ky. 16, 185 S. W. 132; Thomson & Stacy Co. v. Evans, 100 Wash. 277, 170 Pac. 578.

5 Glackin v. Bennett, 226 Mass. 316, 115 N. E. 490.

6 Glackin v. Bennett, 226 Mass. 316, 115 N. E. 490.

7 Van Doren Roofing & Cornice Co. v. Guardian Casualty & Guaranty Co., 99 Wash. 68, 168 Pac. 1124.

8 United States. The Bertha, 91 Fed 272, 33 C. C. A. 509.

California. Harrison v. McCormick, 89 Cal. 327, 23 Am. St. Rep. 469, 26 Pac. 830.

Georgia. Forsyth Mfg. Co. v. Cast-len, 112 Ga. 199, 81 Am. St. Rep. 28, 37 S. E. 485.

Iowa. McEnery v. McEnery, 110 Ia 718, 80 N. W. 1071.

Kentucky. Kreitz v. Gallenstein, 170 Ky. 16, 185 S. W. 132.

Michigan. Ogooshevitz v. Arnold, 107 Mich. 203, 163 N. W. 946.

New Jersey. Naumberg v. Young, 44 N. J. L. 331, 43 Am. Rep. 380; Church of Holy Communion v. Pater-son, 63 N. J. L. 470, 55 L. R. A. 81, 43 Atl. 696; Decker v. Smith, 88 N. J. L. 630, 96 Atl. 915.

South Carolina. Guimarin v. Southern Life & Trust Co., 106 S. Car. 37, 90 S. E. 319.

Virginia. Slaughter v. Smither, 97 Va. 202, 33 S. E. 544.

Washington. Pacific National Bank v. Bridge Co., 23 Wash. 425, 63 Pac. 207; Fairbanks Steam Shovel Co. v. Holt, 79 Wash. 361, L. R. A. 1915B, 477, 140 Pac. 394; Van Doren Roofing & Cornice Co. v. Guardian Casualty & Guaranty Co., 99 Wash. 68, 168 Pac. 1124. "If we may go outside of the instrument to prove that there was a stipulation not contained in it, and so that only part of the contract was put in writing, and then, because of that fact, enforce the oral stipulation, there will be little value left in the rule itself." Eighmie v. Taylor, 98 N. Y. 288, 294 [quoted in Pacific National Bank v. Bridge Co., 23 Wash. 425, 430, 63 Pac. 207].

9 Harrison v. McCormick, 89 Cal. 327, 23 Am. St. Rep. 469, 26 Pac. 830.

10 The Bertha, 91 Fed. 272, 33 C. C. A. 509.

11 Harrison v. McCormick, 89 Cal. 327, 23 Am. St. Rep. 469, 26 Pac. 830; Hirsch v. Mills Co., 40 Or. 601, 67 Pac. 949, 68 Pac. 733.

Apparently contra, Hines v. Willcox, 96 Tenn. 148, 54 Am. St. Rep. 823, 34 L. R. A. 824, 33 S. W. 914; Steed v. Harvey, 18 Utah 367, 72 Am. St. Rep. 789, 54 Pac. 1011.

12Mason v. Griffith, 281 111. 246, 118 N. E. 18.

13 Mason v. Griffith, 281 111. 246, 118 N. E. 18.

14 Wolff v. Wells Fargo & Co., 115 Fed. 32, 52 C. C. A. 626; Klueter v. Joseph Schlitz Brewing Co., 143 Wis. 347, 32 L. R. A. (N.S.) 383, 128 N. W. 43.

15 Selig v. Rehfuss, 195 Pa. St. 200, 45 Atl. 919.

16 Klueter v. Joseph Schlitz Brewing Co., 143 Wis. 347, 32 L. R. A. (N.S.) 383, 128 N. W. 43.

17 Anderson v. Surety Co., 196 Pa. St. 288, 46 Atl. 306.

18 Morrison v. Dickey, 119 Ga. 698, 46 S. E. 863.

19 American Mercantile Exchange v. Blunt, 102 Me. 128, 120 Am. St. Rep. 463, 10 L. R. A. (N.S.) 414, 66 Atl. 212.

20 American Toy Mfg. Co. v. Mc-Loughlin, 221 Mass. 567, 109 N. E. 836.

21 American Toy Mfg. Co. v. Mc-Loughlin, 221 Mass. 567, 109 N. E. 836.

22 Hand v. Drug Co., 63 Minn. 539, 66 N. W. 1081.

23 Pryor v.. Ludden & B. Southern Music House, 134 Ga. 288, 28 L. R. A. (N.S.) 267, 67 S. E. 654: Rosholt v. Woulph, - S. D. - , 167 N. W. 158.

24Murdy v. Skyles, 101 Ia. 549, 63 Am. St. Rep. 411, 70 N. W. 714.

25 Pryor v. Ludden & B. Southern Music House, 134 Ga. 288, 28 L. R. A. (N.S.) 267, 67 S. E. 654; Hille v. Adair (Ky.), 58 S. W. 697.

26Nauman v. Ullman, 102 Wis. 92, 78 N. W. 159.

27Caughron v. Stinespring, 132 Tenn. 636, L. R. A. 1916C, 403, 179 S. W 152.

28 Caughron v. Stinespring, 132 Tenn. 636, L. R. A. 1916C, 403, 179 S. W. 152.

29 Hayes v. Wabash R. Co., 163 Mich. 174, 31 L. R. A. (N.S.) 229, 128 N. W. 217.

30 New York, Lake Erie &. Western Railroad v. Winter, 143 U. S. 60, 36 L. ed. 71.

31 Lawson v. Hobbs, 120 Va. 690, 91 S. E. 750.

32 Potter v. Easton, 82 Minn. 247, 84 N. W. 1011.

33 "Terms cash. Mr. E. P. Putnam to T. F. McDonald, Dr., one bicycle $47.50. Paid July 27, 1896." Putnam v. Mcdonald, 72 Vt. 4, 47 Atl. 159.

34 Colgate v. Latta, 115 N. Car. 127, 26 L. R. A. 321, 20 S. E. 388.

35 Leavitt v. Fiberloid Co.. 196 Mass. 440, 15 L. R. A. (N.S.) 855, 82 N. E. 682.