No. 3, July, 1921] HORTICULTURE 283 



exposed to light and air. The latter type is a desirable form for plum, cherry, and peach 

 trees. — E. J. Kraus. 



1965. Durham, H. E. The recognition of fruit — graphic records. Jour. Pomology 1: 

 28-36. Fig. 2-4. 1919. — The author emphasizes the necessity of uniform and accurate meth- 

 ods in making graphic records in the description of varieties of apples and pears. Longi- 

 tudinal, transverse, and crown sections should be made, the last named to pass through the 

 blossom end just below the calyx. The calyx, calyx tube, position of stamens, core fruit, 

 and "axial sac," or intercarpellary space, are considered to be important characters. 

 A method for tracing fruit outlines without cutting specimens is given. — L. H. MacDaniels. 



1966. Gould, W. M. Production of nursery stock. Amer. Nurseryman 33^: 44, 46. 

 1921. — A detailed discussion of the practices in the nurserj'. — J. H. Gourley. 



1967. GuiLLAUMiN, A. Citranges, limonanges, satsumanges. Rev. Hort. 92: 157-159. 

 Fig. 54. 1920. — The author characterizes further some of the known Citrus trifoliata crosses 

 and summarizes those known to date as follows: Triptera X Bigaradier = Citrange stock; 

 Orange X Triptera = Citranges Armand Bernard, Rusk, Montauban improved; Triptera 

 X Orange = Willist citrange; Lemon X Citrange = Montauban Limonage; Triptera X Satsuma 

 = Norman Satsumange; Citrange X Citrange. [See also Bot. Absts. 7, Entry 1911.] — E. J. 

 Kraus. 



1968. Hatton, Roxald G. Black currant varieties — a method of classification. Jour. 

 Pomology 1: 65-80, 145-154. Fig. 5-15, 17-26. 1920. — All varieties of black currant are 

 derived from the single species Ribes Jiigrum Linn. The nomenclature of the horticultural 

 varieties has been greatly confused. It is important to correct this because of the great 

 variation in the varieties as to disease and pest resistance, bearing, adaptability to soil types, 

 etc. Varieties are divided into the "red bud" and "whitish bud" types on the basis of bud 

 color, and each type into two groups on the basis of growth habit, bud characters, season of 

 flowering, and minor differences in inflorescence, flower, leaf, and fruit. The most prolific 

 variety is the Baldwin, which has as its chief defect susceptibility to gall mite infection. — 

 A review of literature is included. — L. H . MacDaniels. 



1969. Heine. Diingungsversuche im Obstbau. [Fertilizer experiments in fruit culture.] 

 Mitteil. Deutsch. Landw. Ges. 36 : 97-100. 1921 . — A general discussion of facts to be considered 

 in carrying on fertilizer experiments with fruit trees. From experiments conducted at Dah- 

 lem, the author concludes that at least 12 trees should be selected for every treatment pro- 

 posed. — A. J. Pieters. 



1970. Hooper, Cecil H. Notes on insect visitors to fruit blossoms. Jour. Pomology 

 1: 116-124. 1920. — Honey bees are the most frequent visitors of fruit blossoms of all kinds 

 in England. In the case of apple blossoms they comprise about 70 per cent of the visitors, 

 bumble bees, other wild bees, and flies being next in order. Bees, because of their hairy 

 coats, are considered better pollen carriers than beetles or ants. Lists of insects visiting fruit 

 blossoms in Germany are copied from the work of Hermann Miiller. — L. H. MacDaniels. 



1971. Keeble, Frederick. Intensive cultivation. Nature 106:293-296. 1920. — Produc- 

 tion of vegetables, fruits, and potatoes under war time conditions is discussed. — 0. A . Stevens. 



1972. Laxton, Edward. On raising seedling apples. Jour. Pomology I: 104-109. 

 1920. — A brief account of the apple breeding work of the author and his brother. About 

 500 crosses were made and 5000 seedlings raised. Eighty of the most promising crosses are 

 listed and briefly described. Many of the seedlings have much of the flavor and quality of 

 Cox's Orange, a variety used in most of the dessert crosses. Crossing dessert and cooking 

 varieties was found unsatisfactory in practically every case. — L. H. MacDaniels. 



