THE ASH OF PLANTS. 153 



BOOTS AND TUBBBS. 



Potatoes, 2.6—8.0 4.1 I Turnip, 6.0—20.9 12.0 



Sugar bdet, 2.9—6.0 4.4 Carrot, 6.1—10.9 8.2 



Field beet, 2.8—11.3.. 7.7 | Artichoke 5.2 



STRAW AND STEMS. 



Wheat, 3.8—6.9 5.4 



Rye, 4.9—5.6 5.3 



Oats, 6.0—5.4 5.3 



Barley 6.8 



Peas, 6.5—9.4 7.9 



Beans, 5.1—7.2 6.1 



Flax 3.7 



Maize . . . .' 5.5 



GRAINS AND SEED. 



Wheat, 1.5-3.1 2.0 • Buckwheat, 1.1— 2.1 1.4 



Rye, 1.6—2.7 2.0 Peas, 2.4—2.9 2.7 



Oats, 2.5—4.0 3.3 Beans, 2.7— 4.3 3.7 



Barley, 1.8— 2.8 2.3 Flax, 3.6 



Maize, 1.3— 2.1.-. 1.6 i Sorghum 1.9 



WOOD. 



Red Pine 0.3 



Beech 1.0 



Birch 0.3 



Grape 2.7 



Apple 1.3 



White Pine 0.3 



Fir 0.3 



Larch 0.3 



Birch 1.3 I Fir 2.0 



Red Pine 2.8 Walnut 6.4 



White Pine 3.3 | Cautotree 34.4 



From the above table we gather :— 



1. That different plants yield different quantities of 

 ash. It is abundant in succulent foliage, like that of the 

 beet (18 per cent), and small in seeds, wood, and bark. 



2. That different parts of the same plant yield unlike 

 proportions of ash. Thus the wheat kernel contains 3 

 per cent, while the straw yields 5.4 per cent. The ash 

 in sugar-beet tops is 17.5 ; in the roots, 4.4 per cent. 

 In the ripe oat, Arendt found {Das Wachsthum der 

 Haferpflanze, p. 84), 



In the three lower joints of the stem. . . 4.6 per cent of ash. 



In the two middle joints of the stem 5.3 " " 



Intheoneupper joint of the stem 6.4 " " 



In the three lower leaves 10.1 " *' 



In the two upper leaves 10.5 " " 



Intheear 2.6 " " 



3. We further find that, in general, the upper and 

 outer parts of the plant contain the most ash-ingredi- 

 ents. In the oat, as we see from the above figures of 

 Arendt, the ash increases from- the lower portions to the 

 upper, until we reach the ear. If, however, the ear be 



