210 



THE CULTURE OF FARM CROPS. 



COMPOSITION OF VARIOUS MATERIALS FOR COMPOSTS. 

 Dried at 212 Fahr. 



22.24 

 1.24 

 .66 



Substances 100 Ibs. 



Lobster shells 7.27 



Swamp muck 34.40 



Salt mud 46.36 



Bone black waste.. 10.65 



Fish packers waste 71.11 



Starch waste 8.10 .18 



Rotted Brewers grains 78.77 .26 



Refuse hops 81.00 .27 



Tobaccostems 10.65 3.39 



Apple pomace 82.00 .19 



Cotton seed meal 9.90 .22 



Ash of salt marsh grass. 1 g 3.7 



forest leaves 25.8 



ferns j| 8.3 



potato tops 5.5 



beet sugar cake... 2.5 



grape skins ^ 2.1 



seaweeds 8 16.4 



Cotton seed hulls ~| 11.63 



" " " 13.34 



hard wood (pure) 70.0 



" (leached) 74.0 



Softwood 8 32.0 



Corncobs 20.0 



Tan bark ^ 41.0 



Soft coal 5.0 



Hard coal 2.50 



The above table offers a guide 



1.30 

 .29 

 .31 



.15 

 .10 

 1.12 

 .16 

 .56 

 2.9 

 1.7 

 4.5 

 2.7 

 0.5 

 1.0 

 11.2 

 15.24 



.16 

 .04 

 .11 

 7.22 

 .87 

 1.21 

 23.1 

 3.0 

 25.2 

 2.3 

 3.6 

 8.0 

 17.1 

 38.82 

 24.16 

 12.25 

 1.60 

 12.0 

 45.0 

 2.50 

 .20 

 .10 





PH 



3.52 



.23 



.15 



29.64 



.60 



.29 



.43 



.20 



.51 



.10 



1.26 



4.7 



3.4 



5.7 



1.0 



1.2 



3.4 



3.7 



13.67 



10.69 



6.0 



6.80 



4.0 



4.50 



1.20 



.14 



1.05 



4.50 

 1.64 

 .39 



2 21 

 2.62 



.72 



.98 



2.65 



1.24 



3.73 



22.0 

 5.0 

 1.75 



23.70 

 4.58 

 9.33 

 2.91 

 3.62 



14.66 

 5.09 



15.00 



as 



50.30 

 39.00 

 20.00 

 10.40 

 16.80 

 50.00 

 4.50 

 .40 

 .16 



to the value of the 

 It gives a basis for 



above substances to a partial extent, 

 calculating the precise value of the fertilizing elements men- 

 tioned in a ton, or a load of each; but it does not give any 

 clue to the other valuable properties of these substances in 

 the way of their mechanical or chemical effect upon the 

 other materials of the compost, and upon the soil, after the 

 compost has been used. 



From what has been previously said upon these effects, it 

 will be readily perceived that they must be considerable, and 

 that the addition to the soil of a large quantity of any of 

 these materials with the other portions of the compost, must 

 be of very great value. Indeed a few years of the use of 

 such composts to the land has very much changed its char- 



