Trixie Belden; Ex-Library; Vol. 11; 9 oz.; 212 pages; Ex library PB aged w/tape reinforced cover sticker removal spots reading wear solid reading copy '77. More details/pics upon request. Trixie Belden #11. "What is it Brian?" Trixie asked. "Bats. Thousands of them. They're asleep. Gosh!" The startled bats roared into flight, circling the cave clockwise and beating against the Bob-Whites, almost knocking them down. The girls waved their arms wildly and ran out of the cave. Slim, pushing the girls aside, ran ahead of them.