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



ran until the 13th week from the commencement of Series VI, and the 

 figures which would then have been obtained from each complete set of 

 20 plants in Series VI are shown in the Table on the preceding page. 



The corresponding numbers for the five dishes in Series VII can be given 

 for only 11 weeks instead of 13, since this was not started until the 3rd 

 week ; and it should be noted that the numbers in the dishes of this series 

 at the beginning of the experiment are not uniformly 20 as in the previous 

 series, but show a variation, for they represent the halves of the contents of 

 dishes 51 to 55 respectively of Series VI in its 3rd week. 



Table VIII. 





Dish 61. 



Dish 62. 



Dish 63. 



Dish 64. 



Dish 65. 



Mean. 



Number of plants — 















3rd week (at begin- 



59 



53 



59 



55 



57 



56 -6 



ning) 

















128 



122 



138 



128 



130 



129 -2 



5th , 



288 



288 



292 



284 



308 



292 -0 



6th „ 



592 



592 



608 



616 



664 



614 -4 



7th „ 



2,144 



2,192 



1,872 



2,192 



2,112 



2,102 -4 



8th „ 



7,872 



8,640 



5,920 



9,024 



8,064 



7,904 -0 



9th „ 



26,240 



20,864 



22,272 



24,960 



24,320 



23,731 -2 





51,456 



56,320 



50,176 



52,736 



48,640 



51,865 -6 



11th „ 



110,080 



122,880 



114,176 



110,080 



107,008 



112,844-8 



12th „ 



201,728 



222,208 



228,352 



215,040 



211,968 



215,859 -2 



13th „ 



460,800 



487,424 



538,624 



460,800 



454,656 



480,460 -8 



Weight of plants— 



mgrm. 



mgrm. 



mgrm. 



mgrm. 



mgrm. 



mgrm. 





10 -s 



11 '6 



14 -0 



12 -4 



12 -4 



12 -2 



5th „ 



38 -4 



36 -0 



36 -8 



33 -6 



34 -4 



35 -8 



6th „ 



81 -6 



86 -4 



96 -0 



84 '8 



84 -8 



86 -7 



7th „ 



297 "6 



313-6 



265 -6 



288 -0 



313 6 



295 -7 



8th „ 



1,004 -8 



1,145 -6 



851 -2 



1,017 -6 



1,011 -2 



1,006 -1 



9th „ 



2,982 -4 



2,867 -2 



2,944 -0 



2,713 -6 



2,841 -6 



2,869 -8 



10th „ 



5,734 -4 



7,270 -4 



6,451 -2 



7,065 -6 



6,451 -2 



6,594 -6 



11th „ 



14,848 -0 



16,998 -4 



15,667 -2 



17,100 -8 



14,745 -6 



15,872 -0 



12th „ 



28,876 -8 



36,249 -6 



36,454 -4 



33,996 -8 



33,587 -2 



33,832 9 



13th „ 



68,403 -2 



81,100 -8 



87,654 -4 



70,041 -6 



78,233 -6 



77,086 -7 



Similarly in the case of Series VIII the figures, shown in the Table below, 

 can be given for seven weeks only, since this series was not commenced until 

 the 7th week of the whole experiment (Table IX). 



A correct comparison of the rates of growth in these three series cannot 

 be obtained by comparing the figures in the columns for corresponding weeks, 

 since the three series were all started at different dates. The comparison 

 can only be made by putting the number of plants in Series VI at 100 for 

 each week, and calculating the corresponding numbers for Series VII and 

 VIII. It must be noted, however, that Series VII was started at the 

 3rd week of Series VI by taking one-half of the contents of the dishes of 



