But, when the cause and existence of damages have been established by the evidence, recovery will not be denied merely because the damages are difficult to ascertain. See, Rogers v. Stillman, Ark., 1954, 268 S.W.2d 614: Paul v. Camden Motor Company, Inc., 221 Ark. 702, 255 S.W.2d 418 (loss of profits); St. Paul Fire Marine Ins. Co. v. Martin, 204 Ark. XVIII, 165 S.W.2d 606 (fire loss of feed); Penn-National Hardware Mutual v. Griffin, 174 Ark. 627, 296 S.W. 66, 53 A.L.R. 1106 (fire damage to merchandise); Black v. Hogsett, 145 Ark. 178, 224 S.W. 439 (loss of profits). Compare, Story Parchment Company v. Paterson Parchment Paper Company, 282 U.S. 555, 51 S.Ct. 248, 75 L.Ed. 544 (anti-trust suit); United States v. Griffith, Gornall Carman, Inc., 10 Cir., 210 F.2d 11 (loss of profits); Mountain States Tel. Tel. Co., Inc., v. Hinchcliffe, 10 Cir., 204 F.2d 381 (action against telephone company for negligent failure to furnish proper telephone service); Ginsberg v. Royal Ins. Co., 5 Cir., 179 F.2d 152 (smoke damage to clothing); Hawkinson v. Johnston, 8 Cir., 122 F.2d 724, 137 A.L.R. 420 (damages for breach of lease); Calkins v. F.W. Woolworth Co., 8 Cir., 27 F.2d 314 (breach of oral contract to negotiate lease); Walker v. Western Underwriters' Ass'n, 142 Mich. 162,