166 HORTICULTURE [Bot. Absts., Vol. VI, 



and the cases of vegetative segregation reported by himself and by others. He considers that 

 an association or disassociation during growth whereby factors may become active or inac- 

 tive may account for these observed facts. — D. F. Jones. 



1143. von Ubisch, G. Gerstenkreuzungen. [Barley crosses.] Landw. Jahrbucher 53: 

 191-24-1. 3 pi., 18 fig. 1919. — Aim of present contribution is to induce breeders to pay more 

 attention to the laws of hybridization. Author discusses behavior in crossing of several 

 barley traits, such as basal bristles, dentation of lower glume, thickness of ear, number of 

 rows in head, and others. He also treats procedure for quantitative characters, linkage, 

 and abnormalities. At the close an example is taken up to show how breeder may achieve his 

 aim more quickly by attending to laws of heredity. [From anonymous review in Zeitschr. 

 Pflanzenziicht. 7: 141. Dec, 1919.]— J. P. Kelly. 



1144. Webber, H. J. Necessity of selecting stocks in citrus propagation. California 

 Citrograph 5: 177, 198-199. 1 table, 5 fig. Apr., 1920.— A brief restatement of the main fea- 

 tures of the bulletin abstracted in Bot. Absts. 5, Entry 498. — H. B. Frost. 



1145. Wilson, E. H. A new hybrid lily. L. imperiale. Gard. Chron. 67: 255. 1 fig. 

 May 22, 1920. — Many hundred plants of two [presumably hybrid] lilies, L. regale Wils., and 

 L. Sargentiae Wils., were grown near together in Massachusetts. Among seedlings of L. 

 regale there were noticed three intermediate plants. These were presumed to have been due 

 to pollination by L. Sargentiae. One of them is figured and described. — John Belling. 



HORTICULTURE 



J. H. Goueley, Editor 



FRUITS AND GENERAL HORTICULTURE 



1146. Calvino, Mario. Propagacion de las plantas por extaca. [Propagation of plants 

 by cuttings.] Revist. Agric. Com. y Trab. 3 : 4-9. 18 fig. 1920. 



1147. Cooper, J. C. Improving the seedling walnut. Better Fruit 14 6 : 7, 36. Dec, 

 1919. — Scoring cards for both the tree and the nut are given together with a brief discussion of 

 the value of obtaining a good seedling of English walnut for commercial propagation in the 

 Northwest. The author is a walnut grower of long experience. — A. E. Murneek. 



1148. Crandall, C. S. The apple cross— Tolman X Malus Toringo. Proc Amer. Soc 

 Hortic Sci. 16: 60-66. (1919) 1920.— Tolman, a well known standard variety of apples was 

 crossed with a dwarf form of Malus Toringo. The seeds from the resulting fruits were planted 

 and hybrid trees grown. In general appearance the trees strongly resemble the male parent 

 except that they are not dwarf in habit and greatly exceed Malus Toringo in vigor of growth. 

 The fruit of the hybrids bears no resemblance to those of either parent; they are intermediate 

 in size, but to occupy a median position, they would have to be many times heavier and have 

 the diameter more than doubled. While the color was a uniform yellow, it was not the yellow 

 of either Tolman or Malus Toringo, but rather a dark dull orange color. The author states 

 that the outstandng fact regarding the group of seedlings is the extent of the domination of 

 the dwarf, small fruited male parent and the corresponding suppression of resemblance to 

 the mother plant. He states, "This dominance of Malus Toringo characters is indicative of 

 a degree of stability and fixity only acquired by existence through many generations and we 

 must assume this plant to be a true species and very near if not identical with the wild 

 type." [See also Bot. Absts. 6, Entry 1653.]— #. C. Auchler. 



1149. Curtis, Otis F. The upward translocation of food in woody plants. II. Is there 

 normally an upward transfer of storage foods from the roots or trunk to the growing shoots? 

 Amer. Jour. Bot. 7: 286-293. 1920.— See Bot. Absts. 6, Entry 1310. 



