42 CIRCULAR 659, U. S. DEPARTMENT OF AGRICULTURE 



cooperation rather than on the sporadic initiative of individuals. It 

 can perhaps best be attained through the specialized organizations 

 that have been set up for the purpose of promoting the sale of apples 

 generally. With adequate support of these organizations by growers 

 and shippers, and close-knit cooperation between such organizations in 

 different parts of the country particularly, much could be done. Suc- 

 cess would require an educational or demonstration program based on 

 two fundamentals that apply to all in the industry: (1) The intrinsic 

 worth of the apple as an article of diet and (2) the necessity of keeping 

 apples in good condition to maintain their intrinsic worth as food. 



LITERATURE CITED 



(1) Batjer, L. P. 



1943. HARVEST SPRAYS FOR THE CONTROL OF FRUIT DROP. U. S. Dept. Agr. 



Cir. 685, 16 pp., illus. 



(2) Brooks, C, Coolet, J. S., and Fisher, D. F. 



1919. nature and control of apple-scald. Jour. Agr. Res. 18: 211-240, 

 illus. 



(3) Coolet, J. S.. and Fisher, D. F. 



1936. diseases of apples in storage. U. S. Dept. Agr. Farmers' Bui. 1160, 

 20 pp., illus. (Revised.) 



(4) and Fisher, D. F. 



1926. water-core of apples. Jour. Agr. Res. 32: 223-260, illus. 



(5) English, H. 



1948. disinfectant washes for the control of decay in apples and 



pears. (Abstract) Phytopathology 38: 914. 



(6) Gerhardt, F. 



1950. air purification in apple and pear storages. Refrig. Engin. 58: 

 145-148, 192-194, illus. 



(7) Haller, M. H. 



1941. FRUIT PRESSURE TESTERS AND THEIR PRACTICAL APPLICATION. U- S. 



Dept. Agr. Cir. 627, 21 pp., illus. 



(8) Lutz, J. M.. and Mallison. E. D. 



1941. THE RELATION OF FIRMNESS TO RIPENESS OF EASTERN-GROWN APPLES. 



U. S. Dept. Agr. Cir. 579, 22 pp., illus. 



(9) and Magness, J. R. 



1944. picking maturity of apples. U. S. Dept. Agr. Cir 711, 23 pp., illus. 



(10) ■ — and Smith, E. 



1950. evaluation of indexes of maturity for apples. U. S. Dept. Agr. 

 Tech. Bui. 1003, 53 pp., illus. 



(11) Hukill, W. Y., and Smith, E. 



1946. cold storage for apples and pears. U. S. Dept. Agr. Cir. 740, 61 

 pp., illus. 



(12) Kidd, F., and West, C. 



1950. THE REFRIGERATED GAS STORAGE OF APPLES. [Gt. Brit.] Food Invest. 



Bd. Leaflet 6, 13 pp., illus. (Revised.) 



(13) Kienholz, J. R., Robinson, R. H., and Degman, E. S. 



1949. REDUCTION OF PEAR ROTS IN OREGON BY THE USE OF A CHEMICAL WASH. 



Oreg. Agr. Expt. Sta. Cir. Inf. 460, 7 pp. [Processed.] 



(14) Kross, J. L, and Slamp, K. R. 



1941. selling apples directly to retail stores. X. J. Agr. Col. Ext. [Un- 

 numbered- Pub.], 9 pp. [Processed.] 



(15) Magness, J. R. 



1941. apple varieties and important producing sections of the united 

 states. U. S. Dept. Agr. Farmers' Bui. 1883, 32 pp., illus. 



(16) Diehl, H. C, Haller, M. H., and others. 



i926. the ripening, storage, and handling of apples. U. S. Dept. Agr. 

 Dept. Bui. 1406, 64 pp., illus. 



(17) and Taylor, G. F. 



1925. AN IMPROVED TYPE OF PRESSURE TESTER FOR THE DETERMINATION OF 



fruit maturity. U. S. Dept. Agr. Dept. Cir. 350, 8 pp., illus. 



