See also South Penn Collieries Co. v. Sproul, 52 F.2d 557 (3d Cir. 1931); Otis Co. v. Pennsylvania R. Co., 61 F. Supp. 905 (E.D.Pa. 1945), aff'd, 3 Cir., 155 F.2d 522. The burden does not shift to the defendants to prove the fairness of the transaction. Uccello v. Gold'n Foods Inc., 325 Mass. 314 (1950), 90 N.E.2d 530, 16 A.L.R.2d 459. Plaintiffs would have us apply a different standard.
It must be specifically alleged and proved by the party who relies upon it, for purposes of either attack or defence. Jennings v. Murphy, 325 Mass. 314, 319. Cohen v. Santoianni, 330 Mass. 187, 192, and cases cited.