Chap. IX.] EFFECTS OF PREVIOUS IMMERSION. 



175 



Name of the Salts and 

 Acids iu Solution. 



Period of 



IniDic-niiun of 



the Leaves 



in Soliitious 



of one part to 



437 of water. 



Effects produced on the Leaves by their 

 siibst queut luiuierbion for stated pcTiods 

 in a Solution of one part of phocpiiate of 

 auiuiouia to 8750 of water, or 1 gr. to 



aooz. 



Babidiam chloride 



Potassium carbonate 



Calcium acetate 

 Calcium nitrate . 

 Magnesium acetate 



Magnesium nitrate 



Magnesium chloride 



Barium acetate . . 

 Barium nitrate . . 



Strontium acetate . 



Strontium nitrate 



Alominium chloride 



22 his. 



20 m. 



24hr8. 

 24 hrs. 

 22 his. 



22hr8. 



22hrs. 



22hr8. 

 22hr8. 



22hr8. 



22hr8. 



24 his. 



After 30 m. strong inflection of the 

 tentacles. 



Scarcely any inflection until 5 his. 

 had elapsed. 



After 24 hrs. very slight inflection. 

 Do. do. 



Some slight inflection, which became 

 well pronounced in 24 hrs. 



After 4 hrs. 30 m. a fair amount of 

 inflection, which never increased. 



After a few minutes great inflection ; 

 after 4 hrs. all four leaves with 

 almost every tentacle closely in- 

 flected. 



After 24 hrs. two leaves out of four 

 slightly inflected. 



After 30 m. one leaf greatly, and two 

 others moderately, inflected ; they 

 remained thus for 24 hrs. 



After 25 m. two leaves greatly in- 

 flected; after 8 hrs. a third leaf 

 moderately, and the fourth very 

 slightly, inflected. All four thus 

 remained for 24 hrs. 



After 8 hours three leaves out of five 

 moderately inflected ; after 24 his. 

 all five in this state; but not one 

 closely inflected. 



Three leaves which had either been 

 slightly or not at all aflectt^d by the 

 chloride became after 7 hrs.. 30 m. 

 rather closely inflected. 



After 25 hrs. slight and doubtful 

 eflTect. 



After 24 hrs. two leaves somewhat in- 

 flected, the third very little ; and 

 thus remained. 



After 48 his. not the least inflec- 

 tion. 



After 24 hrs. a trace of inflection in a 

 few tentacles, the glands of which 

 had not been killed by the acid. 



After 24 hrs. no inflection. 

 Do. do. 



After 50 m. tentacles decidedly inflect- 

 ed, and after 5 hrs. strongly inflt'<t- 

 ed ; so remained for the next :M 

 hrs. 



Not observed until 24 hrs. had clap8'd ; 

 tentacles considerably inflected, and 

 protoplasm aggregated. 



