498 Prof. W. B. Bottomley. Effects of Auximones on 



Table X. 



Series. 



— : ' 





3rd 

 week. 



4th 

 week. 



5th 

 week. 



6th 

 week. 



7th 

 week. 



8th 

 week. 



9th 

 week 



10th 

 week. 



11th 

 week. 



12th 

 week. 



13th 

 week. 



VI. Detrner 



No. 



100 



100 



100 



100 



100 



100 



100 



100 



- - 

 100 



100 



100 





Wt. 



100 



100 



100 



100 



100 



100 



100 



100 



100 



100 



100 



VII. Detmer + water 



No. 



100 



113 



147 



179 



276 



660 



1265 



1716 



1867 



1998 



2133 



extract free from 



Wt. 



100 



123 



198 



278 



467 



1139 



2411 



3220 



4026 



5083 



6071 



humie acid 



























VIII. Detmer + water 



No. 











100 



192 



466 



59 L 



759 



852 



1164 



extract 



Wt. 











100 



263 



771 



882 



1486 



2150 



3261 



Table XI. 



Weight of 100 plants. 





At 



4th 



5th 



6th 



7th 



8th 



9th 



10th. 



11th 



12th 



13th 





beginning. 



week. 



week. 



week. 



week. 



week. 



week. 



week. 



week. 



week. 



week. 





mgrm. 



mgrm. 



mgrm. 



mgrin. 



mgrm. 



mgrm. 



mgrm. 



mgrm. 



mgrm 



mgrm. 



mgrm. 



Series VI : Detmer' s 



12 -0 



8-7 



9-1 



9-1 



8-3 



7-4 



6 3 



6-8 



6-5 



6-1 



5/6 



solution 

























Series VII : Detmer 





9-5 



12 3 



14-1 



14-1 



12 -7 



12-1 



12-7 



14-0 



15-7 



16 



+ water extract free 

























from humic acid 

























Series VIII : Detmer 













10-1 



10 -3 



11 -o 



12 -8 



15 -9 



15-8 



+ water extract 

























It is evident from these figures that, whilst the toxic substances in the 

 metal-distilled water employed in the previous experiments has had a certain 

 injurious effect upon the growth of the plants, jet the use of pure non-toxic 

 water with mineral salts will not suffice for normal and healthy growth for 

 any length of time. Although the plants in conductivity water multiplied 

 more rapidly, retained their healthy appearance longer, and decreased in 

 weight less rapidly than those in ordinary distilled water, yet the final result 

 in each case was the same. 



These figures are graphically represented in the diagram, fig. 5. 

 . In view of the striking differences in general appearance between the 

 control and auximone plants in both ordinary distilled water and con- 

 ductivity water, an investigation was made of the internal structure of 

 representative plants from each set at the conclusion of the experiment. 

 The plants were fixed, microtomed and stained in the usual manner. Micro- 

 scopic examination then showed that in all the plants examined receiving 

 auximones, the tissues were more dense, and the proj)ortion of air spaces to 



