216 LILY H. HTJIE. 



reduced to a mere vestige. The nuclei are frequently enlarged, 

 and may be spherical, oblong, or distended irregularly. The 

 nuclear plasm is absent or represented by a faint cloudiness in 

 the homogeneous pinkish fluid (?) which fills the nuclear 

 cavity. The chromosomes appear as extremely minute, peri- 

 pherally placed, blue granules. In some very clear nuclei they 

 appear to be connected by fine threads which also stain blue. 

 The nucleolus is slightly smaller than normal. 



OnetoTwoDays (fig. 23). — The cell walls are pale blue. 

 The cytoplasm is almost completely exhausted, very pale blue. 

 The nucleus is small. The nuclear plasm stains as in controls, 

 but deeper. The nuclear membrane is ill-defined and the 

 chromosomes are normal. Nucleolus diminished and staining 

 dull red. 



One to Three Days. — Recuperation takes place in a per- 

 fectly normal way. 



Glutin (stains Red). — In the first experiments glutin 

 was crushed into a powder and moistened with distilled water. 

 Minute particles of this were placed on the tentacles. The 

 tentacles closed rapidly, in about five minutes. The whole 

 supply of glutin given to each leaf did not exceed an ordinary 

 pin^s head in bulk. In half an hour the particles had swollen 

 and become white and translucent like milk. Dry glutin, 

 even if powdered, was not conveyed by the tentacles to the 

 centre of the leaf with anything like the same rapidity ; 

 indeed, it appeared to be indigestible. 



All the tentacles and parts of the leaf which had been 

 touched by the moistened glutin, as just described, died, i. e. 

 became brown and withered, though the leaf as a whole 

 reopened. Therefore the experiments were repeated with still 

 smaller quantities of glutin. It was moistened and softened 

 with distilled water, and placed with great care on the tentacle 

 heads. There resulted complete absorption, and when the 

 leaves reopened they were perfectly clean and healthy. 



These experiments show what very different results may 

 follow dissimilar applications of the same stimulus. 



Five Minutes after Feeding. — The cell walls are 



