Science / Medicine : Acid Rain to Be Measured

The National Audubon Society said Tuesday that it is mobilizing members to monitor the acidity of rainfall in an attempt to make a case for new controls on sources of acid rain.

The society, saying it has 550,000 members in 500 chapters, has 60 monitoring stations at work already and expects 200 eventually.

Volunteers will check the acidity of every rainfall, phone results to a central headquarters and try to publicize particularly abnormal acidity in their hometowns, Peter A. A. Berle, president of the society, said at a news conference.