130 



AGRICULTURE HANDBOOK 134, U.S. DEPT. OF AGRICULTURE 



(44) KOELUNG, M. R. 



1972. VACUUM PRODUCING EQUIPMENT FOR MAPLE 

 SAP OPERATIONS. U.S. Agr. Res. Serv. ARS 

 73-73, 12-16. 



(45) KRIEBEL, H. B. 



1957. PATTERNS OF GENETIC VARIATION IN SUGAR 

 MAPLE. Ohio Agr. Expt. Sta. Res. Bui. 791, 

 56 pp., illus. 



(46) 



1961. FERTIUZATION INCREASES SAP SWEETNESS 

 IN SUGAR BUSH. Ohio Farm and Home Res. 

 46 (6): 92-93, illus. 



(47) LainG, F. M., and ARNOLD, E. L. 



1971. USE OF VACUUM IN PRODUCTION OF MAPLE 

 SAP: PROGRESS REPORT. Vt. Agr. Expt. Sta. 

 Res. Rpt. MP-64, 17 pp. 



(48) LIGHTHALL, M. T. G., and MARVIN, J. W. 



1960. THE USE OF PLASTIC TUBING IN GATHERING 



MAPLE SAP. Vt. Agr. Expt. Sta. Pam. 32, 11 

 pp., illus. 



(49) LIGHTHALL, M. T. G., and Marvin, J. W. 



1962. STUDIES ON PIPEUNE SYSTEMS FOR GATH- 

 ERING MAPLE SAP. Prog. Rpt. No. 1. Vt. 



Agr. Expt. Sta. Misc. Pub. 17, 5 pp. 



(50) Marvin, J. W., and Lighthall, M. T. G. 



1962. EFFECT OF NEW TECHNIQUES ON MAPLE SAP 

 YIELDS. Prog. Rpt. No. 2. Vt. Agr. Expt. 

 Sta. Misc. Pub. 20, 10 pp. 



(51) Lamb, A. F., and PersonIUS, C. J. 



1957. USING MAPLE SIRUP. N.Y. (Cornell) Agr. 

 Ext. Serv. Bui. 985, 8 pp. 



(52) Lento, H. G., Jr., Underwood, J. C, and willits, 



CO. 



1958. BROWNING OF SUGAR SOLUTIONS, n. EF- 

 FECT OF THE POSITION OF AMINO GROUP IN 

 THE ACID MOLECULE IN DILUTE GLUCOSE 

 SOLUTIONS. Food Res. 23: 68-71. 



(53) UNDERWOOD, J. C, and WILUTS, C. O. 



1960. BROWNING OF SUGAR SOLUTIONS. IV. THE 



EFFECT OF PH ON THE VOLATILE PRODUCTS 

 OF REDUCING SUGARS. Food Res. 25: 750- 

 756. 



(54) Underwood, J. C., and Willits, c. O. 



I960. BROWNING OF SUGAR SOLUTIONS. V. EF- 

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 Food Res. 25: 757-763. 



(55) Little, E. L., Jr. 



1953. check ust of native and naturalized 

 trees of the united states (including 

 ALASKA). U.S. Dept. Agr., Agr. Handb. 41, 

 472 pp. 



(56) Maroney, R. H. 



1950. TRENDS IN EVAPORATOR DESIGN. Conf. on 

 Maple Prod. (U.S. Bur. Agr. and Indus. 

 Chem., East. Reg. Res. Lab., Philadelphia, 

 Nov. 13-15), Rpt. Proc. Ill: 29-30. 

 [Processed.] 



(57) Marvin, J. W. 



1949. CHANGES IN BARK THICKNESS DURING SAP 

 FLOW IN SUGAR MAPLES. Science 109: 231- 

 232, illus. 



(58) and GREENE, M. T. 



1951. TEMPERATURE-INDUCED SAP FLOW IN EX- 

 CISED STEMS OF ACER. Plant Physiol. 26: 

 565-580, illus. 



(59) and GREENE, M. T. 



1959. SOME FACTORS AFFECTING THE YIELD FROM 

 MAPLE TAPHOLES. Vt. Agr. Expt. Sta. Bui. 

 611, 28 pp., illus. 



(60) Meeker, e. W. 



1950. CONFECTIONERY SWEETENERS. Food Tech- 

 nol. 4: 361-365, illus. 



(61) M^HOT, J. R., and ROMPRfe, N. 



1953. MAPLE SUGAR INDUSTRY IN QUEBEC. Que- 

 bec Dept. Agr. Bui. 169, 48 pp., illus. 



(62) MONEY, R. W., and BoRN, R. 



1951. EQUILIBRIUM HUMIDITY OF SUGAR SOLU- 

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(63) MooRE, H. R., ANDERSON. W. R., and Baker, R. H. 



1951. OHIO MAPLE SYRUP . . . SOME FACTORS IN- 

 FLUENCING PRODUCTION. Ohio Agr. Expt. 

 Sta. Res. Bui. 718, 53 pp., illus. 



(64) MORROW, R. R. 



1952. CULLING SUGAR BUSH FOR LOW-COST PRO- 

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 Sta.l 18(1): 7, illus. 



(65) 



1953. 



(66) 



(67) 



(68) 



(69) 



(70) 



(71) 



(72) 



(73) 



BIG TREE CROWNS MEAN CHEAPER SIRUP. 

 Farm Res. [N.Y. State Agr. Expt. Sta.] 19(1): 

 12. 



EARLY TAPPING FOR MORE QUALITY SIRUP. 

 Jour. Forestry 53: 24-25. 



INFLUENCE OF TREE CROWNS ON MAPLE SAP 

 PRODUCTION. N.Y. (Cornell) Agr. Expt. Sta. 

 Bui. 916, 30 pp., illus. 



PLASTIC TUBING TESTED FOR MAPLE SAP 

 PRODUCTION. Farm Res. [N.Y. State Agr. 

 Expt. Sta.] 24: (3), 4-5, illus. 



HARDWOOD FUEL FOR BOILING MAPLE SAP? 

 Farm Res. [N.Y. State Agr. Expt. Sta.J 25: 

 (4), 2, illus. 



PLASTIC TUBING FOR MAPLE SAP. Farm 

 Res. (N.Y. State Agr. Expt. Sta.] 27: (2), 12- 

 13. 



RELATIVE VALUES IN MAPLE SIRUP ENTER- 

 PRISES. Dept. Mimeo. C-32. 



INFLUENCE OF NUMBER AND DEPTH OF TAP 

 HOLES ON MAPLE SAP FLOW. N.Y. (Cornell) 

 Agr. Expt. Sta. Bui. 982, 12 pp. 



THE APPUCATION OF VACUUM IN SUGAR 

 BUSHES. N.Y. State Col. Agr. (Cornell), 

 Dept. Conserv., Res. Ser. No. 1, 19 pp. 



