BY A CROWD. 251 



Q. What became of these prisoners ? 



A. They were driveD into a place 

 about 18 fee.t square, and 15 or 16 feet 

 in height, with only two small grated 

 windows. 123 of the prisoners died in 

 one night ; and (of the 23 who survived) 

 the larger portion died of putrid fevers, 

 after they were liberated in the morning. 



Q Why were 123 persons SUFFOCATED in a 

 few hours, from confinement in this close hot PEISON- 

 hole? 



A. Because the oxygen of the air 

 was soon consumed by so many lungs, 

 and its place supplied by carbonic acid 

 exhaled by the hot breath. 



Q. Why do persons in a crowded CHURCH 

 feel DBOWSY ? 



A. 1st Because the crowded con- 

 gregation inhale a large portion of the 

 oxyyen of the air, which alone can 

 sustain vitality and healthy action : and 



2ndly The air of the church is 

 impregnated with carbonic acid gas, 

 which (being a strong narcotic) produces 

 drowsiness in those who inhale it. 



Q. Why did the captives in the BLACK HOLE 

 die SLEEPING ? 



