CHAP. VII. PHOSPHATE OF AMMONIA. 159 



fleeted, or plainly sub-inflected. After 4 hrs. the tentacles 

 began to re-expand, and such prompt re-expansion is unusual ; 

 after 7 hrs. 30 ra. they were almost fully re-expanded. 



(2) After 39 m. a large number of tentacles inflected ; after 

 2 hrs. 18 m. all but twenty-five inflected ; after 4 hrs. 17 m. all 

 but sixteen inflected. The leaf remained in this state for many 

 hours. 



(3) After 12 m. a considerable amount of inflection; after 

 4 hrs. all the tentacles inflected except those of the two outer 

 rows, and the leaf remained in this state for some time ; after 



23 hrs. began to re-expand. 



(4) After 40 m. much inflection ; after 4 hrs. 13 rn. fully half 

 the tentacles inflected ; after 23 hrs. still slightly inflected. 



(5) After 40 m. much inflection ; after 4 hrs. 22 m. fully half 

 the tentacles inflected ; after 23 hrs. still slightly inflected. 



(6) After 40 m. some inflection ; after 2 hrs. 18 m. about 

 twenty-eight outer tentacles inflected ; after 5 hrs. 20 m. about a 

 third of the tentacles inflected ; after 8 hrs. much re-expanded. 



(7) After 20 m. some inflection ; after 2 hrs. a considerable 

 number of tentacles inflected ; after 7 hrs. 45 m. began to 

 re-expand. 



(8) After 38 m. twenty-eight tentacles inflected ; after 3 hrs. 

 45 m. thirty-three inflected, with most of the submarginal 

 tentacles sub-inflected ; continued so for two days, and then 

 partially re-expanded. 



(9) After 38 m. forty-two tentacles inflected; after 3 hrs. 

 12 m. sixty-six inflected or sub-inflected ; after 6 hrs. 40 m. all 

 but twenty-four inflected or slab-inflected ; after 9 hrs. 40 m. all 

 but seventeen inflected ; after 24 hrs. all but four inflected or 

 sub-inflected, only a few being closely inflected ; after 27 hrs. 

 40 m. the blade inflected. The leaf remained in this state for 

 two days, and then began to re-expand. 



(10) After 38 m. twenty-one tentacles inflected ; after 3 hrs. 

 12 m. forty- six tentacles inflected or sub-inflected; after 6 hrs. 

 40 m. all but seventeen inflected, though none closely; after 



24 hrs. every tentacle slightly curved inwards ; after 27 hrs. 

 40 m. blade strongly inflected, and so continued for two days, 

 and then the tentacles and blade very slowly re-expanded. 



(11) This fine dark red and rather old leaf, though not very 

 large, bore an extraordinary number of tentacles (viz. 252), and 

 behaved in an anomalous manner. After 6 hrs. 40 m. only the 

 Bhort tentacles round the outer part of the disc were inflected, 

 forming a ring, as so often occurs in from 8 to 24 hrs. with 

 leaves both in water and the weaker solutions. But after 9 hra 



