DKVICE FOR CAUSING THE DOORS OF THE TEMPLE TO OPEN 

 WIIKX THE KIRK OX TUB ALTAR IS LIGHTED 



(Air heated in the altar P drives water from the closed receptacle H through the 

 tube KL into the bucket M, which descends through gravity, thus opening the 

 doors. When the altar cools, the air contracts, the water is sucked from the 

 bucket, and the weight and pulley close the doors. See p. 248.) 



