Kittens like a nice tight universe with good walls to it."" Bug and Nosey's world is securely confined to the snug quarters of Ann's house until they discover the yard with its back fence as a passageway to new terrors and delights. One could call this probing the feline mystique and it's quite reasonably handled as the two kittens become cats, mothers, etc. They have all kinds of purrrsonality and the adventures are diverting. This should recommend itself to a feminine audience if it can ignore such very occasional passages as ""his yearning voice...from somewhere beyond, from the great cat spirit that drew all cats together at such times as this as if contracting itself with a great cosmic spasm.