474 



REPORTS ON THE STATE OF SCIENCE. 

 PLATE II. 



50 



■A. 



N'? rsj 



O O o 



y 



r « 



; 



/£. 



^> 



Experiment 2. — Mustard seedlbu/ (November 20, 1908). 

 (Transverse section at A.) 



c 



mcm. 



<3 Cm. 



A 



B 



Two successive 'monopliasio' responses to thermic excitation. Duration of single 



phase = nearly 2 min. 



PLATE III. 



7\000 



^ 



Experiment ^.—Electwmted mustard seedling (November 20 1907) 

 No response to thermic stimulations at 1, 2. and 3. The deliections at beginnine 

 and end of experiment are by „t_ volt-f^., the resistance is lower than in Exped- 

 .raent 1, where tlie interpolated deflections are by j-i- volt .^ 



