PRESERVATION OF FRUITS AND VEGETABLES 41 



2,156,845, May 2, 1939, J. G. W. Gentele; method of and apparatus for drying 

 substances in vacuo. [Vegetables, berries, fish, eggs, milk, etc.]' 



2,172,059, September 5, 1939, F. S. Chilton; apparatus for dehydrating food 

 products. [Sterilized and pre-heated, hydrated in tray compart- 

 ments.] 



2,185,129, December 26, 1939, K. Maus; process for dehydrating comminuted 

 potatoes and root crops. 



2,186,282, January 9, 1940, W. W. Cowgill— to Sardik, Inc.; apparatus for treat- 

 ing material. [Drum drier for fruit and vegetable products.] 



2,192,041, February 27, 1940, O. Headland; method of treating and preparing 

 vegetables [and fruits for drving and granulating]. 



2,215,265, September 17, 1940, E. W. Flosdorf ; apparatus for the concentration 

 and preservation of food products and biological substances [by 

 freezing and dehydrating under vacuum while in the frozen or semi- 

 frozen state]. 



LITERATURE CITED 



(1) Association of Official Agricultural Chemists. 



1940. official and tentative methods of analysis . . . Compiled by 

 the committee on editing methods of analysis. Eld. 5, 757 pp. 

 illus. Washington, D. C. 



(2) Back, E. A., and Cotton, R. T. 



1935. INDUSTRIAL FUMIGATION AGAINST INSECTS. U. S. Dept. Agr. Ch\ 



369, 52 pp., illus. [Revised, 1937.] 



(3) Caldwell, Joseph S. 



1918. FARM AND HOME DRYING OF FRUITS AND VEGETABLES. U. S. Dept. 



Agr. Farmers' Bui. 984, 61 pp., illus. [Revised, 1933.] 



(4) Carrier, W. H. 



1921. THE THEORY OF ATMOSPHERIC EVAPORATION WITH SPECIAL REF- 

 ERENCE to compartment dryers. Jour. Indus, and Engin. 

 Chem. 13: 432-438, illus. 



(5) — and Stacey, A. E., Jr. 



1921. the compartment dryer. Jour. Indus, and Engin. Chem. 13: 

 438-447, illus. 



(6) Christie, Arthur W. 



1921. efficiency in dehydration. Calif. Dept. Agr., Monthlv Bui. 



10: 75-82. 



(7) Dean, George A. 



1911. heat as a means of controlling mill insects. Jour. Econ. 

 Ent. 4: 142-158, illus. [Discussion, pp. 158-161.] 

 (8) . 



1913. FURTHER DATA ON HEAT AS A MEANS OF CONTROLLING MILL INSECTS. 



Jour. Econ. Ent. 6: 40-53. [Discussion, pp. 53-55.] 

 (9) Nichols, P. F., and Powers, Ray. 



1925. DEHYDRATED SPINACH: MANUFACTURE, HANDLING, AND STORAGE. 



Amer. Food Jour. 20: 37-39. 

 (10) Noel, W[illiam] A. 



1922. DEHYDRATION OF SWEET CORN SUCCESSFUL. DRYING OF THIS 



PRODUCT HAS BEEN PROVED COMMERCIALLY PROFITABLE DE- 

 TAILS of manufacturing technique. Amer. Food Jour. 

 17 (4) : 7-9, illus. 

 (11) 



(12) 



1922. manufacture of white potato flour. Chem. Age [New York] 

 30: 381-384, illus. 



1926. DRYING BY RECIRCULATION OF AIR. APPARATUS DEVELOPED FOR 

 FOOD DEHYDRATION BY THE DEPARTMENT OF AGRICULTURE 

 SUGGESTS IMPROVEMENT IN GENERAL DRYING PRACTICE. Chem. 



& Metall. Engin. 33: 480-482, illus. 



(13) 



1926. METHOD OF AND APPARATUS FOR DRYING AND CONDITIONING MA- 

 TERIALS. (U. S. Patent No. 1,594,549.) U. S. Patent Office 

 Gaz. 349 (1): 113, illus. 



(14) Parker, William B. 



1915. CONTROL OF DRIED-FRUIT INSECTS IN CALIFORNIA. U. S. Dept. 



Agr. Bui. 235, 15 pp., illus. 



