George Harrison, the former Beatle, held a rather sedate news conference yesterday with Ravi Shankar, the Indian sitar player, to discuss their sold‐out concerts at Madison Square Garden next Sunday. He predicted at least $250,000 raised by the concerts would go to relief of homeless children in East Pakistan, through the United Nations Children's Fund. Mr. Harrison, bearded but less bushy‐haired than he's looked recently on album covers, was asked why he seemed to appear more poised and mature than in the past. “It's old age,” said George, who is 28.