<p>Appeal from the District Court for Chaves County before William H. Pope, Chief Justice.</p> <p>Warranty survives acceptance. Young v. Van Natta et al, 88 S. W. 123; Long v. J. K. Armsby Co., 43 App. Mo. 253, reaffirmed in 46 App. 537; 65 Mo. App. 229; 72 Mo. App. 556; 81 Mo. App. 545; 89 Mo. App. 411; Mc-Manus v. Watkins, 55 Mo. App. 82, reaffirmed 60 Mo. App. 117; 77 Mo. App. 301; Day v. Pool, 52 N Y. 416; Briggs v. Hilton, 99 ,N. Y. 517; Fairbanks Canning Co. v. Metzger, 118 N. Y. 260; Hoe v. Sanborn, 21 N. Y. 552; Bier-man v. City Mills, 151 N. Y. 482.</p> <p>Acceptance is no waiver in case of executory contracts. A. & E. Ene., vol. 30, p. 186, 2 ed., Warranty; Tacoma v. Bradley, 2 Wash. 600; Haven v. Neal, '43 Minn. 315; Weed v. Ityer, 53 Ark. 155; Halley v. Falsom, 1 N. Dak. 325; Nash v. Weidenfeld, 41 N. Y. App. Div. 511, affirmed 166, N. Y. 612; Brown v. Baird, 5 Okla. 133; Hume v. Sherman Oil, etc., Co., 27 Tex. Civ. App. 366. •</p> <p>Courts regard warranty and condition precedent alike, as matters of good defense, upon suit by vendor for purchase price and breach. Morse v. Moore, 13 L. R. A. 224; Cleveland Linseed' Oil Co. v. Buchanan & Sons, 120 Wend. 909; Northwestern Cordage Co. v. Rice, 5 N. Dak. 434, 67 N. W. 298; English v. Spokane Commission Co., 48 Fed. 197; 104 N. Y. 451.</p> <p>It is a presumption of law that if something remains to be done for the purpose of testing the property, or of fixing the amount to be paid by weighing, measuring or the like, title does not pass until such act is done. 24 A. & E. Enc. 1049; McFadden v. Henderson, 128 Ala. 221; Clarke v. Wolfe, 115 Ga. 320; Platter v. Acker, 13 Ind. App. 417; McClung v. Kelley, 21 La. 508; Larkin v. Johnson, 8 Kan. App. 144; Tyler Lumber Co. v. Charlton, 128 Mich. 299; Simpson v. State Bank, 55 Neb. 240; Hopkins v. Davis, 23 N. Y. App. 235; Wadhams v. Balfour, 32 Oregon 313; Parman v. Marshall, 5Í S. W. 116 Tenn.; Edwards v. Irvin, 45 S. W. 1026, Texas; Cornell v. Clark, 104 N. Y. 451.</p> <p>Waiver under the law must be founded upon estoppel. Williams v. Neeley, 69 L. E. A. 232.</p> <p>Until a contract is executed upon one side, the parties may change, alter or rescind same by mutual agreement, and may substitute a new agreement or new terms in place of the old. McCreery v. Day, 119 N. Y. 1, 23 N. E. 198, 16 Am. St. Eep. 793, 6 L. E. A. 503; Hathaway v. Lynn, Wis., 43 N. W. 956, 6 L. E. A. 551; Perkins v. Hoyt, 35 Mich. 506; Eine v. Eogers, 15 Mo. 316; Chouteau v. Jupiter Iron Wks., 83 Mo. 73; 35 Cyc. p. 124; Cutter v. Cochrane, 116 Mass. 408; Langford v. Cummings, 4 Ala. 46; Miles v. Eoberts, 34 N. H. 245.</p> <p>The mutual promises of the parties to substitute the new agreement are sufficient consideration for each other. Perkins v. Hoyt, 35 Mich. 506; Hathaway v. Lynn, Wis., 6 L. E. A. 551; Cutler v. Cochrane, 116 Mass. 408; Fine v. Eogers, 15 Mo. 316; Euege v. Gates, 71 Wis. 634; McClay v. Gluck, Minn., 72 N. W. 875.</p> <p>The question of intention to rescind a contract, or to mutually alter same or its terms, or to substitute new terms for old, is a question of fact. Manhattan, etc., Co. v. Allis, etc., Co., Kan., 54 Pac. 689; Eppens v. Littlejohn, N. Y., 58 N. E. 19, 52 L. E. A. 811; Chauteau v. Jupiter Iron Works, 83 Mo. 73; Eogers v. Eogers, Mass., 1 N. E. 122; Fine v. Eogers, 15 Mo. 316; McClay v. Gluck, Minn., 42 N. W. 875'.</p> <p>Distinction between methods of acceptance: Estep v. Fenton, 66 111. 467; Mears v. Nichols. 41 111. 207, 89 Am. Dec. 381; Underwood v. Wolf, 131, 111. 425, 19 Am. St. Rep. 40; 35 Cye. 141.</p> <p>Findings of fact of the trial court will not be disturbed by the appellate court where they are based on substantial evidence to sustain them. Hancock v. Beasley, 14 N. M. 239, 91 Pac. 735; Eagle Mining Co. v. Hamilton, 14 N. M. 271, 94 Pac. 949; Richardson v. Pierce, 14 N. M. 334, 93 Pac. 715; Candelaria v. Miera, 13 N. M. 360, 84 Pac. 1020. '</p> <p>If a warranty is conditioned upon a trial for a limited time, and the trial within that time is satisfactory to the buyer or if the warranty is conditioned upon a test and the test proves satisfactory, the warranty is deemed fulfilled. Thesler v. Hopkins, 85 111. App. 207; Scroggen v. Wood, Iowa, 54 N. W. 437; Bayliss v. Hennessey, Iowa, 6 N. W. 46; McParlin v. Boynton, 8 Hun., N. Y., 499, affirmed in 71 N. Y. 604.</p>