446 EXPERIMENT STATION RECORD. [Vol. 38 



Experimental projects of the division of pomology, University of Cali- 

 fornia, W. 1>. HowAUD {Mo. Bui. Com. Hort. Col., 7 (IWS), No. 1-2, pp. 62-6^).— 

 A suniniarizotl stati'nient of projects being conducted at Davis, Berlieley, and 

 elsewhere in California. 



The science of fruit growing, V. Bogue (Rochester, N. Y.: Democrat and 

 Chronicle Vrint, 1017, pp. 37, pi. 1). — In tliLs booklet the author draws a com- 

 parison between the life functions of plants and of animals and presents some 

 views as to how fruit trees should be grown to conform to the laws of natur©. 



Apple breeding in Canada, W. T. Macoun (Agr. Gas, Canada, 5 {1018), No. 

 2, pp. 126-128). — A brief summary of results secured from long-continued breed- 

 ing investigations conducted at the Central Experimental Farm, Ottawa (B. S. 

 R., 30, p. 742). 



Citrus culture, P. Guitet-Vauquelin {La Culture des Citrus. Paris: Au- 

 gustin Challamel, 1017, pp. lOff, figs. 11). — A treatise on citrus, with special 

 reference to the Mediterranean zone. The introductory chapter discusses the 

 morphology of the genus. The succeeding chaptei"^ deal with species and 

 varieties, culture, maladies, and insect remedies, citrus in the industries and 

 in medicine, and summer citrus, such as lemons and limes. 



[Coconuts and coffee] {Proc. Agr. Conf. Malaya, 1 {1017), pp. 61,-7 J,, 115-122, 

 168-170). — The following papers, with discussions, contributed to the First 

 Agricultural Conference of Malaya, held at Kuala Lumpur, April 25-28, 1917, 

 are here reported : The Diseases and Pests of the Coconut Palm, by R. M. 

 Richards (pp. G4-74) ; Observations on Coconut Experiments, by G. E. 

 Coombs and W. S. Cookson (pp. 11.5-122) ; and The Cultivation of Liberian 

 Coffee, by R. W. Munro (pp. 103-170), 



The grafted jujube of China, D. Fairchild {Jour. Heredity, (WIS), No. 1, 

 pp. 3-7, figs. 5). — An account of the Chinese jujubes that have been tested in 

 recent years by the U. S. Department of Agriculture in various parts of the 

 country. The author indicates regions in which seedling jujubes have been 

 more or less successful and regions that are considered promising for testing 

 the grafted forms. 



Chrysanthemum varieties, A. D. Shamel {Jour. Heredity, 9 {1918), No. 2, pp. 

 81-8/f). — As further evidence of the origin of certain cultivated varieties of 

 ornamental plants through bud variation (E. S. R., 37, pp. 14.5, 546) the author 

 presents a partial list of chrysanthemum varieties reported by Cramer as 

 originating from bud sports in his review of the known cases of bud variation 

 (E. S. R.. 20, p. 325). 



Longevity in lily pollea, F. H. Hobsfobd (Jour. Heredity, 9 {1918), No. 2, 

 p. 90). — The author found that the pollen of early lily varieties may be pre- 

 served for two or three months in small envelopes for use in pollinating late 

 varieties. Pollen of Lilium auratum was wrapped in two or three sheets of 

 paraffin paper, kept in a warm, dry place, and successfully used the following 

 spring in pollinating L. martagon. 



A striking reproductive habit, A. A. Hansen {Jour. Heredity, 9 {1918), No. 

 2, p. 85, fig. i).— The production of aerial bulbs on stems of the Easter lily, 

 Lilium longifiorum eximium, is illustrated and discussed. As experimeutally 

 determined, these bulbs produce normal plants, devoid of aerial bulbs; hence 

 it is concluded that the phenomenon is not due to inheritance. 



Petalization in the Japanese quince, A. A. Hansen {Jour. Heredity, 9 {1918), 

 No. 1, pp. 15-17, figs. 2). — An illustrated discussion of the intergrading of petals 

 and stamens as observed in the .Japanese quince {Cydonia japonica), with 

 special reference to the utilization of the flowers of this ornamental as illus- 

 trative material by teachers and others. 



