July 25, 1981

The Reagan Administration, openly offering tax concessions to win votes in the House of Representatives, today introduced still another version of its three-year tax-relief bill that included future automatic ''indexing'' of tax brackets to offset inflation. With voting in the House scheduled for next Wednesday, President Reagan and Vice President Bush exhorted House Republicans at a rally to stick by their President and party. Mr. Bush, acknowledging that Republicans might ''have reservations'' about some provisions in the Administration bill, said they should vote for it anyway because ''it is important that the President be perceived as moving the country forward.'' Countered by Rostenkowski In a counterthrust a few hours later, Representative Dan Rostenkowski of Illinois, the Democratic chairman of the Ways and Means Committee, contended that the Democratic bill would give more tax relief to ''the working poor.''

SEGMENTED BUS TESTED: Passengers boarding a 60-foot bus for a demonstration yesterday near City Hall. The 63-seat Hungarian vehicle, hinged to facili-tate turning, is 20 feet longer and has 50 percent greater capacity than a standard bus. It is in use in Louisville, Ky.; San Mateo, Calif., and many cities in Europe.

Puerto Rico, which will bear the full brunt of Federal budget cuts but get none of the benefits of proposed tax reductions, is already feeling the effects of the loss of Federal programs, and officials here say a huge new wave of migration to the mainland will ensue if help is not provided. Unemployment on the island, which has a population density 15 times the national average, has risen to 20.4 percent from 18 percent since workers under the Comprehensive Employment Training Act lost their jobs. In many towns, the unemployment rate is as high as 40 percent, and there are no jobs to be had. Baltasar Corrada del Rio, the commonwealth's Resident Commissioner in Washington, said, ''My deep concern is that by late 1982 or early 1983 the Federal Government will have developed policies which will create great pressures on thousands, possibly hundreds of thousands, of Puerto Ricans to migrate from Puerto Rico to the United States mainland, mostly to such states as New York, New Jersey, Connecticut, Massachusetts and Illinois.''

A series of unusual bail hearings for inmates at the Westchester County Jail has ended, with 24 men and one woman walking free to await court action. The hearings, held in the jail's gymnasium, its women's unit and in court, also resulted in the lowering of bail in 107 cases, it was announced today by Justice Joseph F. Gagliardi of State Supreme Court, who supervised the hearings. A total of 323 cases were heard in four days. The bail reviews grew out of a statewide directive that a monthly review process be established for inmates awaiting trial. The directive, issued by the chief administrative judge of New York State, Herbert B. Evans, went to administrative judges around the state on July 13.

In Senate confirmation proceedings this year, William J. Casey, now the Director of Central Intelligence, failed to disclose stock holdings in one corporation and the receipt as a gift of a $10,000 interest in another business venture, according to a review of public records and information provided by a close business associate. In a personal financial disclosure statement presented to the Senate Intelligence Committee last January, Mr. Casey said that he had not received any gifts worth more than $500 in the last five years. Account by Business Associate However, a longtime business associate, Carl G. Paffendorf, said in interviews this week that in November or December 1976 he gave Mr. Casey a $10,000 interest in Penverter Partners, a limited partnership engaged in development of computer technology. Mr. Paffendorf said that Mr. Casey gave him a nominal sum of $100, but he repeatedly characterized Mr. Casey's interest, which he said is now worth $20,000, as a ''gift.'' Mr. Casey, responding to questions through a spokesman for the Central Intelligence Agency, said he believed that he had paid ''some nominal consideration'' for the Penverter interest. He said he considered the transaction a purchase and not a gift, but he acknowledged that he did not know the value of the interest when he acquired it.