A group led by Morgan Stanley & Co. sweetened its friendly bid to acquire Burlington Industries to $2.12 billion . . . Allegheny International said it will not pay the second-quarter dividends on its common stock, $2.19 cumulative preference stock and $11.25 convertible preferred stock, that would be payable on July 1 . . . Ailing gun maker Smith & Wesson Inc. has been purchased for $112.5 million by F. H. Tompkins PLC of London . . . Delta Air Lines said it will match the fare increases announced earlier by other airlines to offset rising fuel costs.