14 



TRACTS ON VARIOUS SUBJECTS, &c. 



for the manures, according to the black lines in the following 



diagram 



Class 1. 



Class 2, 



Class 3. 



C/ass 4. 



'Z^i^l^" I-"ge «ed 



f Walnuts 

 planted whole. 



9 6 3 



cut in pieces. 

 12 9 'J 3 



E)e<, middle 

 sized Potatoes. 



12 9 6 3 



Small Potatoes 

 planted whole. 



12 9 6 3 



Horse Dung Litter, 35 loads per acre. 

 I 2 3 4 I 5 6 7 8 I 9 10 11 12 I 13 14 1.5 1( 



Hog's Dung Litter, 35 loads per acre. 

 17 18 19 20 I 21 22 23 24 \ 25 26 27 28 J 29 30 31 32 



Guana; or, Sea-fowl Dung, 35 bushels per acre. 

 33 34 35 36 | 37 38 39 40 | 41 42 43 44 | 45 46 47 48 



N'o Manure. 

 49 50 51 52 I 53 54 55 56 | 57 58 59 60 | 61 62 63 64 



of planting 

 experiments 



experiments 



experiments 

 experiments 



66 feet. 



The figures 12. 9. 6. 3. represent the depths of planting in 

 inches, and the positions of each two rows which traversed the 

 manured and unmanured parts. The numbers 1 to 64 shew the 

 situations of the experiments. The three narrow paths which 

 separated the manured divisions reduced the cultivated space 

 from 16- to 15 feet : each experiment upon the two rows con- 

 sisted therefore of 15 feet in length, or of 30 feet of rows ; which, 

 as will be hereafter explained, is the 726th part of an acre. 



The manures were evenly spread over the beds in the orders 

 and quantities specified in the diagram ; they were then trenched 

 one spit deep into the soil. The transverse lines mark the spaces 

 for each class of seed, and by crossing the manure divisions 

 they formed 16 squares, containing each four distinct experi- 

 ments ; .so that the total number was 64. The soil was rather 



