POODS ANIMAL PRODUCTION. 817 



crops in a rotation for bogs; the cost of rearing 10-montli pigs on foods 

 gathered by themselves and grown on soil of known fertility; and to 

 ascertain a system of rearing i)igs for pcn^k with a miiiimnm qnantity 

 of corn." 



The test was made with o pigs, crossbred from a grade Poland-China 

 sow and a Berkshire boar. The pigs were harrowed March 3 and were 

 kept with the sow nntil May 13. Until Jnly L*9 corn meal and wheat 

 bran were fed in addition to the forage crops. From March L'3 to March 

 30 the sow and pigs were pastured on rye, from March 30 to July 2G on 

 clover, and from July 20 to September 21 on sorghum. From Septem- 

 ber 21 to October 3, 2 of the pigs were pastured on sweet potatoes and 

 the others on peanuts. The sweet potatoes were not relished, and from 

 October 3 to December 2 all were pastured on peanuts. On December 

 2 the ground froze and the pigs could not get at the peanuts. They 

 were therefore fed on corn until January 3, when they were slaughtered. 

 The corn was shelled and soaked in water, and the pigs were fed all 

 they would eat. 



The forage crops were grown on 1.1 acres of ''a worn, sandy loam, 

 deficient in vegetable matter, which would produce about 25 bu. of corn 

 to the acre in a good season." The details of raising the crops and the 

 results of the experiment are tabulated. 



The combined weight of the pigs September 21 was 505 lbs. From 

 this date to December 2 the total gain in weight was 471 lbs., or an 

 average of 1.31 lbs. daily. January 3 (date of slaughtering) the com- 

 bined weight of the pigs was 1,215 lbs. and the average weight 243 lbs. 

 During the last 31 days the jiigs consumed 19 bu. of corn and made a 

 total gain of 179 lbs., or an average of 1.15 lbs, per day and 9.4 lbs. per 

 bushel of corn. 



The financial statement is based on wheat bran at 05 cts. per 100 lbs. 

 and corn meal and corn at 30 cts. per bushel. Taking into account 

 the total value of the grain, the cost of growing the green crops, and 

 the rent of the land, the total cost of raising the pigs was $18.11. They 

 were sold at the rate $.>.25 per 100 lbs., for $39.48, yielding a ])rofit of 

 $21.37, or an average of $4.25 per pig. The average cost of making 1 

 lb. of pork was 1.5 cts. 



From this experiment the author draws the following conclusions: 



"Red clover, sorj:;hunj, aucl peanuts were the foods best adapted for rotation. 

 They are cheap and easy to produce, and thcsir seasons of maturity are in convenient 

 order for pigs to consume tiieni. . . . Sweet potatoes were unetjual to the peanuts in 

 palatability and as fat and llesh formers. . . . 



"The rotation of red clover, sorghum, and peanuts required 6'i bushels of corn to 

 pro<luce a hog weighing 24;^ lbs. at 10 months old. Less corn could have been fed in 

 farm practice by keeping tlie pigs 2 weei<s longer on peanuts in December, an<l feed- 

 ing corn only while the ground was frozen. Two weeks' feeding on corn would 

 have been sufficient to liarden the pigs for slaughter." 



Experiments in feeding draft horses, L. Grandeau, H. Bal- 

 LACEY, and A. Alekan {Ann. >Sci. Agron., 18!>0, II, Mo. 1-2, pp. 113- 

 237).—T\\'m is the seventh and concluding series of experiments on the 



