expe 



imen 



. It was the 



first 



expe 



rim 



ntal evidenc 



e of the 



larity 

 Lavo 

 chen 



betv 

 istry 



and 



marks th 



; first 



nd r 

 step 



spi 



ation (confir 

 the realm of 



med late 

 physiolo 



Se 



e now 



the 



unlockin 



gP° 



\er o 



f th 



e interrogatio 



n point. 



plant 



s, sai 



i Pr 



estley, behave 



as a 



nim 



als do ? Can they li 



an a 



tmosphere 



where 



anim 



lis s 



jffo 



:ate and fla 



Ties go 



Then 



foil 



wed 



that fam 





expe 





nt in which, 



after a rr 



had 



suffoc 



ated 



under a 



bell- 





nd 



t was shown 



that an 



mou 



eex 



ired 



instantly 



whe 



i intr 



odu 



:ed into the s 



ame jar 



asp 



igof 



die, b 



min 



was pla 

 thrived 



with 



t the 



ual 



e space. N 

 vigor. Moi 



Dt only c 

 eover th 



after 



ten d 



ays, 



would en 



able 



imou 



set 



o breathe with the gr 



of e 



se. 



Wh 



n later e 



xper 



ment 



s o 



Priestley ga 



ve some 



diffe 



acce 

 Se 



e th 



nly 

 hisc 



'he reje 

 he "goo 



dexp 



.by 



i to 

 these 



how 



ndi 



cate that pla 



nts may 

 he misse 



ery of p 



" I ha\ 



ind that 



:dthe 

 . fresh cab- 



ir for the 



iss vessel filled with c 

 space of one night only, has so affected the air, that a candle 

 would not burn in it the next morning, and yet the leaf had not 

 acquired the smell of putrefaction." However he attributed the 

 result to incipient putrefaction. It is a source of regret to us all 

 to know that the discoverer of oxygen died in ignorance of the 

 fact that it is concerned in plant respiration, or even that it had 

 anything to do with combustion, for his last published writing 

 was a lengthy and spirited defence of phlogiston, and a refutation 

 of the theory that 



Priestley is 

 i, but his 



ally 



partly upon priority of publicatic 



years before the appear 



had been made in Germany by Karl Wilhelm Sc 



oxygen dephlogisticated air ; Scheele called it " fi 

 proceeded at once to find out all he could about i 

 among other things, that germinating pea seeds c< 



