Report of the Judges. 



221 



The following table is computed from the preceding one, and 

 shows how many pounds were required to draw each plow 

 through each yard in each furrow. For example, if a rope had 

 been attached to the bridle of Collins' plow and passed over a 

 pulley, it would require a weight of 740 pounds, acting by its 

 own gravity, to pull it one yard of the hardest soil down hill in 

 the first furrow, and 617 pounds in the second furrow: 



On examining the tables it will be seen that the average power 

 required to pull the Collins plow in the hardest soil was 20 pounds 

 more than tliat required to pull the Holbrook plow; in the easiest 

 it required 18 pounds more; the average of all the pulls was 19 

 pounds more. 



This fully establishes the fact that the Holbrook plow has the 

 lightest draught. 



N. B. — It will be observed that the above table also represents 

 the power required to turn each cubic foot of earth, because the 

 area of the cross section is just a square foot. 



Fourth — Ease of holding: Decided in favor of Holbrook's. 



Fifth — Durability: Decided in favor of Collins'. 



Sixth — Cheapness: Decided in favor of Holbrook's. 



Seventh — Excellence of mechanical work: Adjudged equal. 



Eighth — Excellence of material: Decided in favor of Collins'. 



Ninth — Thorough inversion and burial of weeds: Decided in 

 favor of Holbrook's. 



