42 CIRCULAR 619, U. S. DEPARTMENT OF AGRICULTURE 



(15) Prescott, S. C, and Sweet, L. D. 



1919. COMMERCIAL DEHYDRATION: A FACTOR IN THE SOLUTION OF THE 



international food problem. Amer. Acad. Polit. and Social 

 Sci. Ann. 83: 48-69. 



(16) Ridley, Grahame B. 



1921. tunnel dryers. Jour. Indus, and Engin. Chem. 13: 453-460, 

 illus. 



(17) Tiemann, Harry D. 



1917. THE THEORY OF DRYING AND ITS APPLICATION TO THE NEW HUMID- 

 ITY-REGULATED AND RECIRCULATING DRY KILN. U. S. Dept. 



Agr. Bul. 509, 28 pp., illus. 



(18) United States Bureau of the Census. 



1936-38. canning and preserving. In Biennial Census of Manufac- 

 tures 1933, pp. 69-77; 1935, pp. 77-100. 



(19) Wiegand, Ernest H. 



1923. recirculation driers. Oreg. Agr. Expt. Sta. Cir. 40, 11 pp., 



illus. [Revised, 1929.] 



(20) . 



1924. drying prunes in Oregon. Oreg. Agr. Expt. Sta. Bul. 205, 26 



pp., illus. 



SUPPLEMENTARY BIBLIOGRAPHY 



Gore, H. C. 



1910. EXPERIMENTS ON THE PREPARATION OF SUGARED, DRIED PINEAPPLES. 



U. S. Dept. Agr. Bur. Chem. Cir. 57, 8 pp., illus. 

 Langworthy, C. F. 



1913. RAISINS, FIGS, AND OTHER DRIED FRUITS AND THEIR USE. U. S. 



Dept. Agr. Yearbook 1912: 505-522. 

 Caldwell, J. S. 



1916. evaporation of apples. Wash. Agr. Expt. Sta. Bul. 131, 110 



pp., illus. 

 Beattie, James H., and Gould, H. P. 



1917. commercial evaporation and drying of fruits. U. S. Dept. 



Agr. Farmers' Bul. 903, 61 pp., illus. 

 Caldwell, J. S. 



1917. THE EVAPORATION OF FRUITS AND VEGETABLES. Wash. Agr. Expt. 



Sta. Bul. 148, 111 pp., illus. 

 Lewis, C. I., Brown, F. R., and Barss, A. F. 



1917. the evaporation of prunes. Oreg. Agr. Expt. Sta. Bul. 145, 36 

 pp., illus. 

 McGillivray, C. S. 



1917. evaporated apples. Canada Dept. Agr. Bul. 24, 38 pp., illus. 



PUGSLEY, C. W. 



1917. A SUCCESSFUL COMMUNITY DRYING PLANT. U. S. Dept. Agr. 



Farmers' Bul. 916, 12 pp., illus. 

 Ekroth, Clarence V. 



1918. FRUIT AND VEGETABLE DEHYDRATION FROM A TECHNICAL STAND- 



POINT. Amer. Jour. Pub. Health 8: 205-207. 

 Cruess, W. V. 



1919. evaporators for prune drying. Calif. Agr. Expt. Sta. Cir. 213, 



30 pp., illus. 



1919. the evaporation of vegetables. Calif. Dept. Agr. Monthly 

 Bul. 8: 93-100, illus. 

 Falk, K. George, Frankel, Edward M., and McKee, Ralph H. 



1919. LOW TEMPERATURE- VACUUM FOOD DEHYDRATION. IndllS. and 



Engin. Chem. Jour. 11: 1036-1040. 

 Prescott, S. C. 



1919. relation of dehydration to agriculture. U. S. Dept. Agr. 



Sec. Cir. 126, 11 pp.; Pure Products 15: 134-140. 

 Christie, Arthur W. 



1920. the university farm evaporator. Calif. Dept. Agr. Monthly 



Bul. 9: 125-130, illus. 

 Falk, K. George. 



1920. new methods of food dehydration. Amer. Food Jour. 15 (2) : 

 15-17. 



