ORGANIC CONSTITUENTS. 



27 



Table 12. — Pentosans found in seeds and axes when grown in solutions lacking one 



nutrient. 





Complete less nitrate. 



Complete less potash. 



Complete less phos- 

 phoric acid. 



Complete solution. 



Parts of 



plant and 



age. 



Weight 

 of 100. 



Pentosans. 



Weight 

 of 100. 



Pentosans. 



Weight 

 of 100. 



Pentosans. 



Weight 

 of 100. 



Pentosans, 





Grams. 



Per 

 cent. 



Grams. 



Per 



cent. 



Grams. 



Per 

 cent. 



Grams. 



Per 

 cent. 



Original 

 seed 



Seeds: 



5 days. 



9 days. 

 15 days. 

 22 days. 



Axes: 



5 days. 



9 days. 



15 days. 



22 days. 



Total plants: 



5 days. 



9 days. 

 15 days. 

 22days. 



Grams. 

 3.50 



1.710 

 .790 

 .375 

 .311 



1.212 

 1.977 

 2.066 

 1.880 



2.922 

 2.767 

 2.441 

 2.191 



0.256 



.216 

 .183 

 .101 

 .081 



.160 

 .303 

 .331 

 .322 



.376 

 .486 

 .432 

 .403 



7.3 



12.6 

 23.2 

 27.0 

 26.0 



13.2 

 15.3 

 16.0 

 17.1 



12.9 

 17.6 

 17.7 

 18.4 



Grams. 

 3.50 



1.650 

 .766 

 .377 

 .338 



1.230 

 1.740 

 1.921 

 1.755 



2.880 

 2.506 

 2.298 

 2.093 



0.256 



.216 

 ,166 

 .111 

 .088 



.127 

 .270 

 .312 

 .331 



.343. 

 .436 

 .423 

 .419 



7.3 



13.1 

 21.7 

 29.4 

 26.0 



10.3 

 15.5 

 16.2 

 18.9 



11.9 

 17.4 

 18.4 

 20.0 



Grams. 

 3.50 



1.740 



.675 

 .348 



0.256 



.203 

 .179 

 .112 



7.3 



11.7 

 26.5 

 32.2 



Grams. 

 3.50 



1.643 

 .621 

 .291 

 .328 



1.220 

 1.945 

 2.142 

 1.750 



2.863 

 2.566 

 2.433 

 _ 2. 078 



0.256 



.210 



.158 

 ,095 

 ,091 



,154 

 ,314 

 .330 

 .323 



.364 

 .472 

 .425 

 .414 



7,3 



12.8 

 25.0 

 33.0 

 30 



1.177 

 1.833 

 2.153 



.147 

 ,269 

 .368 



12.5 

 14.7 

 17.1 



12.6 

 16,1 

 15.4 



18.5 



2.917 



2.508 

 2.501 



.350 



. .448 



.480 



12.0 

 17.9 

 19.2 



12.7 

 18.4 

 17.5 

 19.9 







1 





Table 13, — Percentage of pentosans in axes and seeds based on original amount in seed. 



Parts of 



Control 

 solu- 

 tion. 



Potash 

 solu- 

 tion. 



Phos- 

 phoric 

 acid 

 solu- 

 tion. 



Control 

 solu- 

 tion. 



Nitro- 

 gen 

 solu- 

 tion. 



Com- 

 plete 

 solu- 

 tion. 



Tap 

 water. 



Complete solution less- 



Com- 

 plete 

 solu- 

 tion. 



plant 

 and age. 



Potash. 



Phos- 

 phorus, 



Nitro- 

 gen. 



Axes: 



5 days. 

 7 days. 



53 

 67 

 100 

 107 

 101 



51 

 74 

 115 

 100 

 109 



51 



84 



""iu 



118 



47 

 68 

 80 

 96 

 90 



43 

 68 

 95 

 121 

 102 



54 

 76 

 95 

 97 

 105 



41 



60 

 85 

 105 

 120 



62 



50 



58 



60 



9 days. 

 12 days. 



118 



105 



105 



122 



15 days. 

 22 days. 



129 

 125 



84 



122 

 129 



84 



143 



80 



129 

 126 



Seeds: 



5 days. 

 7 days . 



80 

 72 

 70 

 51 

 44 



85 

 80 

 72 

 65 

 50 



86 

 74 

 68 

 55 

 45 



83 

 83 

 75 

 08 

 53 



85 



77 

 72 

 56 

 43 



88 

 79 

 71 

 63 

 46 



86 

 80 

 68 

 58 

 45 



82 



9 days. 

 12 days. 



72 



65 



70 



62 



15 days. 



39 



43 



44 



37 



