32 



The 2nd. of Oct. for example I found on a young tree ha- 

 ving passed the night outside: 



No. 351 much 



352 empty 



353 ranch 



354 empty 



355 empty 



356 much 



357 very much 



358 much 



359 exceedingly large quantity 



360 much. 



Out of 10 leaves consequently but 3 were empty. 



Next day, the 3d. of October another small tree, 

 which served for the experiment, was put in the glass- 

 house for the night and was examined with the fol- 

 lowing resuit: 



Oct. 3. 6 p. m. Oct. 4. 6. a. m 



after night in glasshouse: 



361 exceedingly large quantifies empty 



362 „ „ „ „ 



363 „ „ „ „ 



364 77 n n „ n 



365 „ „ „ „ i 1 ) 



367 „ „ „ empty 



368 exceedingly large queantities „ C 1 ) 



369 pretty much „ „ empty 



370 „ 7 , n „ 



Consequently out of 10 leaves ail ten were empty 



Next day also, with a plant put in the dark room, a 

 favorable resuit was obtained: 



(!) Even the picric-acid reaction failed. 



