“ Judgments like the one left standing here make it difficult indeed for small independent, local companies to survive against the predatory assaults of their larger and more powerful interstate competitors. ”

“ The complaint charged that respondent, selling from a plant at Shelby, Ohio, had damaged petitioner by cutting milk prices where it competed with petitioner but not cutting prices elsewhere in Ohio. The complaint did not, however, allege any price discrimination which involved sales across state lines. Petitioner then asked the court to allow it to amend its complaint to show that, although respondent cut prices for intrastate sales where it competed with petitioner, it did not cut prices for sales made in interstate commerce. ”