26 



(55) SHAMEL, A. D. 1919. Some Eesults from an Experiment with Pruning as Compared 



with No Pruning of Full-Bearing Washington Navel Trees. In Calif. Citrograph, 

 v. 4, no. 7, pp. 174-175, 3 fig. May. 



(56) SHAMEL, A. D. 1919. Applying the Furrow Manure in Citrus Groves. In Calif. 



Citrograph, v. 5, no. 1, p. 4, 4 fig. Nov. 



(57) SHAMEL, A. D. 1919. Origin of a New and Improved French Prune. In Jour. 



Hered., v. 10, no. 8, pp. 338-343, fig. 1-3 and frontispiece. Nov. 



(58) SHAMEL, A. D. 1920. Eesults of Five Years' Individual Tree Performance Records 



with ^Pruned and Unpruned Lemon Trees. In Calif. Citrograph, v. 5, no. 4, pp. 

 102, 122-123, 128, 3 fig. Feb. 



(59) SHAMEL, A. D. 1920. Control of Humidity Conditions in Lemon Storage Rooms. In 



Calif. Citrograph, v. 5, no. 5, pp. 137, 170-171. March. 



(60) SHAMEL, A. D. 1920. Cooperative Improvement of Citrus Varieties. In U. S. Dept. 



Agr. Yearbook, 1919, pp. 249-275, 15 fig. (Issued as Yearbook Separate No. 813.) 



(61) SHAMEL, A. D. 1920. Origin of a Grapefruit Variety Having Pink-Colored Fruits. 



In. Jour. Hered., v. 11, no. 4, pp. 157-160, fig. 5-8, April. 



(62) SHAMEL, A. D. 1920. The Conservation and Application of Manures. In Calif. 



Citrograph, v. 5, no. 7, pp. 213, 240-243, 3 figs. May. 



(63) SHAMEL, A. D. 1920. Results of Individual Tree Performance Studies With Pruned 



and Unpruned Marsh Grapefruit Trees. In Calif. Citrograph, v. 5, no. 8, pp. 248, 

 268-269, 4 fig. June. 



(64) - SCOTT, L. B., AND POMEROY, C. S. 1918. Citrus Fruit Improvement: A 

 Study of Bud Variation in the Washington Navel Orange. U. S. Dept. Agr. Bui. 

 623, 146 p., 16 fig., 19 pi. 



(65) - SCOTT, L. B., AND POMEROY, C. S. 1918. Citrus Fruit Improvement: A 

 Study of Bud Variation in the Valencia Orange. U. S. Dept. Agr. Bui. 624, 120 p., 

 9 fig., 14 pi. 



(66) SCOTT, L. B., AND POMEROY, C. S. 1918. Citrus Fruit Improvement: A 



Study of Bud Variation in the Marsh Grapefruit. U. S. Dept. Agr. Bui. 697, 112 p., 

 14 fig., 11 pi. 



(67) - AND DYER, C. L. 1920. Citrus Fruit Improve- 

 ment : A Study of Bud Variation in the Eureka Lemon. U. S. Dept. Agr. Bui. 

 813, 88 p., 22 fig., 7 pi. 



(68) - AND DYER, C. L. 1920. Citrus Fruit Improve- 

 ment : A Study of Bud Variation in the Lisbon Lemon. U. S. Dept. Agr. Bui. 

 815, 70 p., 14 fig., 8 pi. 



(69) STOUT, A. B. 1915. The Origin of Dwarf Plants as Shown in a Sport of Hibiscus 



oculiroseus. Bui. Torr. Bot. Club, v. 42, pp. 429-450, pi. 26-27. Sept. 22. 



(70) STOUT, A. B. 1915. The Establishment of Varieties in Coleus by the Selection of 



Somatic Variations. Carnegie Inst. Wash. Pub. 218, 80 p., 4 pi. (3 col.). Oct. 7. 



(71) TOTTY, CHARLES H. 1918. Ophelia and Its Progeny. In The Am. Rose Ann., pp. 



96-98. 



(72) DE VRIES, HUGO. 1901-3. Die Mutationstheorie, 2 v., illus. Leipzig. (Eng. trans. 



1909-1910. Chicago.) 



(73) DE VRIES, HUGO. 1905. Species and Varieties; Their Origin by Mutation. Chicago. 



(74) DE VRIES, HUGO. 1918. Mass Mutation in Zea mays. In Science, n.s., v. 47, no. 1219, 



pp. 465-467. 



(75) WAID, C. W. 1907. Results of Hill Selection of Seed Potatoes. In Rept. Am. Breed. 



Asso., v. 3, pp. 191-198. 



(76) WEBBER, H. J. 1903. New Horticultural and Agricultural Terms. In Science, n. s., 



v. 18, pp. 501-503. 



(77) WEBBER, H. J. 1909. Clonal or Bud Variation. In Rept. Am. Breed. Asso., v. 5, 



pp. 347-357. 



(78) WEBBER, H. J. 1912. The Production of New and Improved Varieties of Timothy. 



Cornell Univ. Agr. Exp. Sta. Bui. 313, pp. 337-392, fig. 86-96, pi. 1-10. April. 



