166 



QUERIES AND ANSWERS. 



Fraits in 

 Order of 

 Maturity. 



Nitrogen. 



Rotation of 

 Crops. 



Wheat. 



Of Pears as follows : 



Early.— Barilett, Doyenne D'Ete, 



Intermediate. — D'Anjou, LeConte, Bossouck, Sickel, Angouleme. 



Late. — Lawrence, Rutter, KeiflFer, Clairgeau, Sheldon. 



Of Peaches as follows : 



Early. — Mountain Rose, Arasden, June, Rivers, Crawford's Early. 



Intermediate. — Stump the World, Old Mixon, Alexander, Reeves, Fa- 

 vorite. 



Late. — Crawford's Late, Wonderful, Ward's Late, Lemon Cling, Free- 

 man's Late, Heath Cling, Foster, Susquehanna. 



Of Strawberries as follows : 



Early. — Bubach, Crescent Seedling, Jessie, Wilson. 



Intermediate. — Sharpless, Charleston. 



Late. — Gandy, Kentucky, Mt. Vernon. 



Of Raspberries as follows : 



Early. — Turner, Black, Doolittle and Rancocas. 



Intermediate. — Souhegan, Marlboro, Cuthburt. 



Late. — Gregg, Surprise. 



Of Grapes as follows : 



Early. — Moore's Early, Champion, Wyoming Red, Victor, Early Har- 

 vest. 



Intermediate. — Worden, Concord, Empire State, Delaware. 



Late. — Highland, Pocklington, Salem, Wilder and Niagara. 



Of Blackberries as follows : 



Early. — Kittatinnery, Lawson, Wilson, Jr. 



Intermediate. — Snyder. 



Late. — Taylor. 



Of Cherries as follows : 



Early. — Mazzards, Hearts. 



Intermediate. — Biggareaus. 



Late. — Morelloes. 



931. Q. How much nitrogen do crops take from the soil ? 



A. They differ ; but in a general way, according to Dr. Lawes, cropping 

 under an average rotation takes about 150 pounds each year, and about 

 that much more is lost by leeching down to the substrata. Dr. Lawes 

 estimates that "about 300 pounds a year has thus to be obtained from some 

 source or other. 



933. Q. Who first advocated the agricultural system of crop rotation ? 



A. Lord Townshend, in 1730, saw the system practiced in Germany, 

 and introduced it upon his Norfolk estate, a rotation of turnips, barley, 

 clover and wheat, raising his farm land from a sandy waste to great pro- 

 ductiveness and value. 



933. Q. What has been the increase of late years in the acreage of 

 wheat production in the United States ? 



A. In 1872 the area was twenty-one million acres, in 1876 twenty -eight 

 million acres, and in 1892 thirty-eight million acres. 



