James Flora, who wrote The gives youngsters another brilliantly colored picture book. The frenzied consequences of Old Floss, the family cow, catching cold, caught Fletcher, a small boy, up in a mounting cycle of hilariously disastrous events. Floss' S-N-E-E-Z-E blew a mouse out of the bay. A preying cat missed the mouse and landed on a billy goat's back. He left the barn post haste, knocked down a motorcycle policeman and ended up driving a steam roller. Madder and madder grew the reverberations of the sneeze. Fletcher, the billy goat, et al, collided with a ferris wheel, rolled down a mountain into a truck full of fireworks, then onto a dock with a fishing boat. The author-illustrator fills the pages of his big picture book with patterned pandemonium and charivari shenanigans. Not for bedtime, though --it's too explosively wide-awake. Parents will enjoy it as much as the young fry. Treatment is modern -- but not abstract.