392 
MR. A. J. EWAET ON ASSIMILATORY INHIBITION. 
I. Ulex europeus.—Living green branches showed at first no 
perceptible evolution of Oxygen but in 3 hours at 15° C. 
weak and in 8 hours fairly active. 
5 grammes green branches. 
5 grammes similar green branches. 
| | 
Reading. Time. m Soo ved Reading. Time. C 80 mi 
182 cc.) 9.30A.w. 181 ce.) 9.304. 
1805 cc.12  , | 03 cc. | Light. 1788 c.c. 12  , | O44 cc. |) 
1785 c.c. 2.30».«.| 0'4 c.c. | Darkness. ||176:3 c.c.| 2.30 p.m.) 0:50 c.c. | 
1781 ce. 5  , | 008 c.c. | Light. 1739 ec| 5 „ | 048 c.c. | y Darkness, 
N ext day. Next day. | 
1577 ec. 10 am) 1:2 cc. | Darkness. 1615 cc. 10. aa} O73 ec. |) 
157:5 c.c. 10.30 ,, | 02 c.c. | Light. 161:3 c.c.10.30 „ | 02 cc. | Light. 
157:5 ec.) 3 ra| 00 ce, | Light. 1613 ce. 8 ra| 00 cc. | Light. 
156:5 ee. 5 , | 0:25 cc. | Darkness. | 160:5 c.c.| 5 » 02 c.c. | Darkness. 
IL. Thuja Standishii—Specimens taken after temperature had 
been at from —8? C. (day) to —15? C. (night) for several 
days, showed after 3 hours at 18? C. no power of assimi- 
lation, but after 5 hours weak and in 1 day fairly active 
assimilation in all cells with normal green or only slightly 
browned chlorophyll grains. 
All cells with quite brown 
chlorophyll grains, which are mostly in the outer layers of 
the leaf, show after 1 day still no assimilation. 
8 grammes quite brown twigs. 
8 grammes green or very 
faintly browned twigs. 
Reading. | Time. | SOs evolved | Reading. | Time. | COs fimus. 
181°5 c.c. | 3.30 r.m. | In darkness. || 180:0 c.c. | 3.30 p.m. | In darkness. 
1810 ec. | 4 » 05 cc. 1787 c.c. | 4 » 13 cc 
18077 c.c. | 4.30 ,, 03 cc. 1781 ec. | 4.30 ,, 06 ce. 
1805 ce. | 5 » : 02 ce. 1775 ec. | 5 » 06 c.c. 
1803 c.c. | 5.30 ,, 02 ce. 1770 ec. | 5.30 ,, 05 ce. 
Next day. Next day. 
1695 ec. (10 Ax, 0:315 c.c. 1700 cc. |10 Ax. 0:178 c.c. 
1686 ec. {12 ,, 0-225 c.c. 169:3 e.o. | 11.30 ,, 093 e.c. 
| 3rd day. 
| | 160-4 c.c. | 9 am. 0:169 c.c. 
