Texas Jake, the big yellow tomcat with the white belly, has risked his life to save his friends from the huge mastiff known as Bertram the Bad. Now Marco and Polo, the newest members of the Club of Mysteries, find they have an assignment to help Texas Jake recover from his wounds. The other cats have duties too, but somehow Marco and Polo always seem to get the worst of the deal. <P> Could Texas Jake be a wee bit jealous of Marco, the cat who can "reeeaaad," as Texas is so fond of saying? And if he doesn't recover, who will take his place? Boots? Elvis? Marco? Polo? Which of the cats does Carlotta, the calico beauty, prefer? That's the big question. <P> Polo wishes they had never left the comfort of their velveteen basket back at the Neals', especially when he learns that he and Marco must venture over to the city dump, hangout of the dreaded Steak Knife and his Over-the-Hill Gang. <I>The Healing of Texas Jake</I> is Phyllis Reynolds Naylor's charming, funny sequel to her best-seller, <I>The Grand Escape.</I>