ROOT CROPS 303 



Method of Determination. With the cheese trier take out a piece 

 from about the middle of the "mother root." Weigh it to milligrams and 

 record. Fill beaker with water, hang the sample by the wire to the beam of 

 the balance in the water: make sure it does not touch the side of the beaker. 

 Weigh and record. Weigh the wire and record, and deduct from the weight 

 of the root and wire. The result is the weight of tire root in water, and is 

 to be deducted from the weight of the sample in air to furnish a divisor. 

 The weight of the sample in air is the dividend, and the quotient obtained 

 is the specific gravity. The specific gravity of juice is obtained by extracting 

 the juice and reading by means of the hydrometer. 



390. COLLATERAL READING. Thomas Shaw: Forage Crops other than 

 Grasses. New York: Orange Judd Co., 1900. 



C. L. Allen: Cabbages, Cauliflower and Allied Vegetables. New York: 

 Orange Judd Co., 1902. 



L. S. Ware: Beet Sugar Manufacture and Refining, Vol. I, pp. 16-35. New 

 York: John Wiley & Sons, 1905. 



Guilford L. Spencer: A Handbook for Chemists of Beet-sugar Houses and 

 Seed-culture Farms, pp. 190-6. New York: John Wiley & Sons, 1904. 



Charles F. Saylor: Progress of the Beet-sugar Industry in the United States 

 in 1901. U. S. Dept. Agr. Report No. 72, pp. 61-74 



Geo. B. Harrison: The Beet-sugar Industry in Kansas. Kansas State Bd. 

 Agr. Report (Quarter ending September), 1906. 



H. W. Wiley: The Sugar Beet. U. S. Dept. Agr., Farmers' Bui. No. 

 52, 1899. 



C. O. Townsend: Relation of Sugar Beets to General Farming. In U. S. 

 Dept. Agr. Yearbook 1903, pp. 399-410. 



Thomas A. Williams: Rape as a Forage Plant. U. S. Dept. Agr., Div. 

 Agros. Circ. No. 12, 1899. 



A. S. Hitchcock: Rape as a Forage Crop. U. S. Dept. Agr., Farmers' Bui. 

 No 164, 1903. 



J. H. Grisdale: The Rape Plant. Dept. Agr., Central Expt. Farm, Ottawa, 

 Can., Bui. No. 42, 1903. 



Samuel Fraser: Cabbages for Stock-feeding. New York Cornell Sta. Bui. 

 No. 242, 1906. 



Samuel Fraser, John W. Gilmore, and Charles F. Clark: Roots for Stock- 

 feeding. New York Cornell Sta. Bui. No. 243, 1907. 



