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42 BULLETIN 907, U. S. DEPARTMENT OF AGRICULTURE. 
LITERATURE CITED. 
(1) Cuayton, E. E. 
1919. HYDROGEN CYANIDE FUMIGATION. In Bot. Gaz., v. 67, no. 6, p. 483~ 
500, 2 fig. (Literature cited, p. 500.) : 
(2) Corr, J. E., and Hopeson, R. W. 
1919. AN INVESTIGATION OF THE ABNORMAL SHEDDING OF YOUNG FRUITS 
OF THE WASHINGTON-NAVEL ORANGES. Jn Univ. Cal. Pub., Agr. — 
Sci., v. 3, no. 11, p.283-368, 9 fig., pl. 25-42. (Literature cited, p. 
368.) 
(3) Coqurtetr, D. W. 
1891. REPORT ON VARIOUS METHODS FOR DESTROYING SCALE INSECTS. THE 
GAS TREATMENT FOR THE RED SCALE. U.S. Dept. Agr. Div. Ent. 
Bul. 23 (0. s.), p. 20-27: 
(4) Dueear, B. M. 
1912. PLANT PHYSIOLOGY. 516p.,illus. New York. 
(5) Tower, W. V., and Hooker, CHarLes W. 
1910. FUMIGATION DosaGE. (With introductions by H. T. Fernald.) 3 
In 22nd Rpt. Mass. Agr. Exp. Sta., pt. 1, p. 214-247. 
(6) Fow ier, L. W., and Lipman, C. B. 
1917. OPTIMUM MOISTURE CONDITION FOR YOUNG LEMON TREES ON A 
Loam sort.. In Univ. Cal. Pub., Agr. Sci., v. 3, no. 2, p. 25-36, pl. 
9-11. Sept. 29. 
(7) Gossarp, H. A. 
1903. WHITE FLY (ALEYRODES cITRI). Fla. Agr. Exp. Sta. Bul. 67, p. 599- 
666, pl. 6. 
(8) Harvey, R. B. 
1918. HARDENING PROCESS IN PLANTS AND DEVELOPMENTS FROM FROST 
twyury. In Jour. Agr. Research, v. 15, no. 2, p: 83-112, 3 fig., pl. 
7-11, A. (Literature cited, p. 108-111.) 
(9) Luoyp, F. E.. 
1908. THE PHYSIOLOGY OF sToMaTA. Carn. Inst. Wash. Pub. 82, 142 p., 14 pl. 
(Bibliography, p. 141-142.) 
(10) MacDoveat, D. T. 
1901. PRACTICAL TEXT-BOOK OF PLANT PHYSIOLOGY. 352 p., 159 fig. New 
York, London, and Bombay. 
(11) Moore, WILLiaM. : 
1916. STUDIES IN GREENHOUSE FUMIGATION WITH HYDROCYANIC ACID: 
TEMPERATURE AND MOISTURE AS FACTORS INFLUENCING THE INJURY 
OF PLANTS DURING FUMIGATION. Jn 16th Rpt. State Ent. Minn., ; 
1915/16, p. 93-108, fig. 23-27. (Literature cited, p. 108.) 
(12) Moore, Wiiuiam, and Wittaman, J. J. : 
1917. STUDIES IN GREENHOUSE FUMIGATION WITH HYDROCYANIC ACID: 
PHYSIOLOGICAL EFFECTS ON THE PLANT. Jn Jour. Agr. Research, 
v. 11, no. 7, p. 319-338, 11 fig., pl. 34. (Literature cited, p. 336—- 
(13) Morr, A. W. : 
1908. FUMIGATION FOR THE CITRUS WHITE FLY, AS ADAPTED TO FLORIDA 
_conpitions. U.S. Dept. Agr. Bur. Ent. Bul. 76, p. 73, 11 fig., 7 pl. 
(14) Penny, C. L. 
1900. THE DIFFUSION OF HYDROCYANIC ACID VAPOR IN AN ENCLOSED SPACE. 
In Del. Agr. Exp. Sta. 12th Ann. Rpt., p. 218-235, fig. 24. 
(15) PFEFFER, WILHELM. 
1903. PHYSIOLOGY OF PLANTS. Ed. 2. Trans. and ed. by A. J. Ewart. 
v. 2, 296 p., illus. Oxford. 
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