ALBANY, N.Y. (AP) — Spon sors of a bill to liberalize New York's 96-year-old abortion law wearily shrugged off its defeat in the Assembly and looked to the public today to support au thority next year. *It's really up to the public from now on,”’ said Albert Blu menthal, the Manhattan Demo crat who has been trying for four years to induce abortion re form, ‘Tf they want this law changed, they're going to have to let the legislature know. Assemblymen spent more than five hours in anguished ho urs pay before rejectin the bill, 678. Gov. Rockefeller and Assembly Speaker Perry B. Duryea Jr., made special ap peals for its passage. Advocates of the bill continu ally cautioned in debate that re form of the law was inevitable, if not this year, then next year or the year after. ‘The measure before the house would have added new grounds to the current law, which per- ignits abortion only when contin uation of the pregnancy endar the life of the mother. The defeated bill also would have permitted abortions when. —There was a substantial risk that the continuing pregnancy would gravely impair the physi cal or mental health of the ex pectant mother . The pregnancy resulted from rape or incest, or when the female was 15 years old or younger. The mother was mentally disabled or incompetent. There was substantial risk s that the fetus would be born with serious physical or mental abnormalities, or so malformed that it would be perfently in capable of caring for itself. Abortions would have been al lowed until the 20th week of pregnancy—in cases— other than rape or incest, which would have had a 13-week limit.