Lo J 
that they had a very remarkable 
power to foul a great body of air, in 
which they were fhut up, to fuch a 
degree, that two dozen of fmall 
French beans, placed in a jar hold- 
ing two pints, had rendered in one 
night the air in the jar abfolutely 
poifonous, fo that a young chicken 
placed in it was killed in lefs than 
twenty feconds. I found even this 
deleterious influence of beans upon 
air to furpafs the power of plants, 
which are known to be of a poi- 
fonous quality. See experiments 
475—9QI, and principally experi- 
“ments 88 and 89. 
_ Ripe mulberries, filling one-third . 
of ajar, and placed in the fun during 
four hours, had fo much fouled the 
air within the jar that a candle 
“would not burnin it. | 
SEC- 
