276 EUROPEAN AGRICULTURE. 



the drills with the guano became manifest, and continued to 

 increase with the growth of the turnips, particularly in those 

 drills which received the greatest quantity, till the whole were 

 carted off in October, when the produce (topped and rooted) of 

 the whole six drills were weighed, each two as differing in the 

 quantity of guano applied, compared with two drills immediately 

 adjoining, on which the farm-yard manure had been used. The 

 following was the result : 



Kinds of Manure. Quantities applied. Produce per Acre. 



Two drills with GUANO, . . 5 cwt. per acre, . . 25 cwt. 5 st. 



&quot; dung, . . 18 yds. &quot; &quot; . . 18 &quot; 7 &quot; 



&quot; &quot; GUANO, . . 4 cwt. &quot; &quot; . . 22 &quot; 6 &quot; 



&quot; &quot; dung, . . 18 yds. &quot; . . 19 &quot; 7 &quot; 



&quot; &quot; GUANO, . . 3 CWt. &quot; &quot; . . 20 &quot; 6 &quot; 



&quot; dung, . . 18 yds. &quot; &quot; . . 19 &quot; 2 &quot; 



&quot; In the second experiment, a comparative trial was made 

 between guano and bone-dust mixed with coal-ashes. The 

 ashes were sifted, and intimately mixed with the bones, some 

 days before being applied, in the proportion of sixteen bushels of 

 bones and eight of ashes, per acre. The quantity of guano 

 applied was at the rate of three hundred weight per acre upon 

 four drills, two and two together, at an interval of eight drills 

 manured with bones and ashes. Then, at a similar interval, 

 followed two drills, operated upon with guano together with 

 sulphate of soda, (Glauber salts,) at the rate of four hundred 

 weight per acre being the only instance, in the course of these 

 experiments, in which any foreign substance was used with the 

 guano. The turnips were drawn about the end of November ; 

 and on a comparison of the weight of the crop on two of the 

 four drills done with guano alone , with the produce of the 

 average of four drills, nearly immediately adjoining, manured 

 with bone-dust and ashes, the result stood thus (the plants being 

 topped and rooted) : 



Manures. Produce per Acre. 



GUANO, alone, 23 cwt. 2 st. 



Guano and sulphate of soda, 23 &quot; &quot; 



Bone-dust, 19 &quot; 2 &quot; 



