Accidents are the fourth leading cause of death in the United States, the first in the 1-36 age category, and take 100,000 lives a year. Safety writer Jean Carper's family survival kit should be welcome on every home's first aid shelf. She is alert to dangers in the home, on the highway, out of doors, and informed as to how to cope with them. There's fire (smoke, not fire is the killer), poisons (candied baby aspirin is the most frequent, though not the deadliest culprit), driving (and the deadly stop--use seat belts), etc. Here are lists of common household poisons, driving tips, directions on mouth-to-mouth resuscitation and drownproofing, advice on having family fire drills and on which mushrooms not to pick. From sparks to sharks, Miss Carper is on the qui vive that can make the difference between the quick and the dead. Her book, endorsed by the National Safety Council, is as essential as aspirin and not half so toxic.