May 15, 1979

W Sullivan on progress in development of nuclear fusion technology, which holds out hope of safe energy that produces far less hazardous wastes than fission does and burns on virtually inexhaustible fuel; discusses work on achieving fusion through magnetic confinement (Tokamak method) and inertial confinement; chart of Shiva-Nova laser machine at Lawrence Livermore Laboratory (M)

Profile of changing Chelsea section of Manhattan; ethnic transitions detailed; illus (M)

Olympia Brewing Co will introduce 540-year-old German beer called Grenzquell in attempt to reverse declining sales; Grenzquell, which will have $3 million promotional campaign, will be co's 7th brand; Olympia has slipped from 6th to 7th place nationally; pres Leopold F Schmidt 3d comments; illus; graphs (M)

Jane Brody article notes recent investigations into dietary habits of prehistoric peoples suggest that human body may not have biological capacity for the heavy meat eating that is typical of many modern societies; result may be host of diet-related health problems; new view portrays early humans more as herbivores than carnivores; Drs William J Hamilton 3d and Curt D Busse comment; modern-day hunting and gathering tribes such as bushmen of Botswana, whose diet is up to 80% vegetable matter, are free from degenerative diseases that are rampant in industrial societies (M)

McLemore says he is being held for ransom by Indians in remote part of Colombia, admits he was trying to pick up 1,500 lbs of marijuana for delivery to US when he and Spradley landed in Colombia; gives account in phone call to Dale Everitt, official of Houston Fire Dept; McLemore says he fears Indians may murder him; Rogers says if Spradley was knowingly involved in drug smuggling, Houston Fire Dept will withdraw all aid; incident revd; illus of Spradley under guard at hospital in Riohacha (L)