No. 85. J 



69 



constituents of plants are, but the proportions in which they exist in 

 the most common cultivated plants, we shall show the result in a se- 

 ries of tables prepared from Sprengel. The analysis of both the 

 grain and the straw will be given, as it will be seen a knowledge and 

 comparison of both will be requisite to a proper understanding of the 

 subject. The quantity supposed to be operated upon is 1000 lbs. of 

 each, and the amount of ashes, and its composition, from this quan- 

 tity will be seen at a glance. The tables show how much each plant 

 takes from the soil, and consequently their power of exhausting it of 

 any one particular ingredient, and the quantity that should be added, 

 to repair the loss. The absurdity of the idea, that soils cannot be 

 exhausted, is also demonstrated most conclusively, since it is mani- 

 festly impossible where the material is limited, to be constantly ta- 

 king away without, in the end. producing exhaustion, and consequent 

 sterility. 



Potash, 



Soda, 



Lime, 



Magnesia, 



Alumina, 



Oxide of iron, .... 

 Oxide of manganese 



Silica, 



Sulphuric acid, .... 

 Phosphoric acid, . . 

 Chlorine, 



WHEAT. 



Grain. 



lbs. 

 2.25 

 2.40 

 0.96 

 0.90 

 0.26 



4.00 

 0.50 

 0.40 

 0.10 



BARLEY. 



Straw. Grain. 



lbs. 

 0.20 

 0.29 

 2.40 

 0.32 

 0.90 



28.70 

 0.37 

 1.70 

 0.30 



11.77 35.18 23.49 



lbs. 

 2.78 

 2.90 

 1.06 

 1.80 

 0.25 

 a trace. 



11.82 

 0.59 

 2.10 

 0.19 



OATS. 



Straw. Grain. 

 I 



lbs. 

 1.80 

 0.48 

 5.44 

 0.76 

 1.46 

 0.14 

 0.20 



38.56 

 1.18 

 1.60 

 0.70 



52.42 



lbs. 

 1.50 

 1.32 

 0.86 

 0.67 

 0.14 

 0.40 



19.76 

 0.35 

 0.70 

 0.10 



Straw. 



-I. 



lbs. 

 8.70 

 0.02 

 1.52 

 0.22 

 0.06 

 0.02 

 0.02 



45.88 

 0.79 

 0.12 

 0.05 



RYE. 



Grain. 



lbs. 



5.32 



1.22 

 0.44 



0.66 



0.34 

 1.64 

 0.23 

 0.46 

 0.09 



Straw. 



25.80 57.40 10.40 27.93 



lbs. 



0.43 



1.78 

 0.12 



0.25 



22.97 

 1.70 

 0.51 

 0.17 



In the following table, embracing the filled pea, the common roots, 

 and a few of the best hay plants, the proportions of the same mate- 

 rials will be continued, and we think, will well repay the examina- 

 tion of the farmer. 



Potash, 



Soda, 



Lime, 



Magnesia, 



Alumina, 



Oxide of iron, 



Oxide of manganese, 



Silica, 



Sulphuric acid, 



Phosphoric acid, 



Chlorine, 



FIELD PEA. 



Grain. Straw 



8-10 



4-10 

 0-53 

 1-90 

 0-33 



2-35 



27-30 

 3.32 

 0-GO 

 0-20 

 O-O' 

 9-96 

 3-37 

 2.40 

 0-04 



TURNEPS. 



.1. 



Root. Tops 



23.86 

 10.48 

 7.52 

 2-54 

 0-36 

 0-32 



3- 



8-01 

 3-67 

 2-39 



32-3 

 22-2 

 62 



5 







1 



Roots. 



POTATOES. 



Roots Tops 



35-33 

 9-22 

 6-57 

 3-84 



24.64f 49-71 63-03 180-9 66-19 



12-8 



25-2 



9-8 



8-7 



39 

 33 

 60 

 37 

 70 

 14 

 ■70 



40-28 

 23-34 

 3-31 

 3-24 

 0-60 

 0-32 



0-84 

 5-40 

 4-01 

 1-60 



Si 



K 



S2-83 



Sl-9 



0-9 



129-7 



17-0 



0-4 



0-2 



49-9 

 4-2 



19-7 

 5-0 



8-81 

 3-94 

 7-34 

 0-90 

 0-31 



308-4 



27-72 

 3-53 

 0-25 

 0-06 



52-86 



19-95 

 5-29 



27 -SO 

 3-33 



0-14 



3-61 



4-47 

 6-57 

 3-62 



31-05 

 5-79 



23-48 

 3-05 

 1-90 

 0-63 



14-73 

 3-53 

 5-OS 

 211 



74-78 91-32 



