HORTICULTURE. 443 



when the bml.s were moist than those of a similar or slightly greater severity 

 when the buds were dry. 



A preliminary report on the pollination of the sweet cherry, V. R. 

 Gardner (Oregon Sta. Bui. 116, pp. 40, pis. 12). — In the attempt to secure pure 

 bred seeds of a number of varieties of the sweet cherry for use in further 

 breeding investigations, considerable data were secured in 1911 and in 1912 

 which tended to show that some varieties of the sweet cherry are practically 

 self-sterile and that certain varieties are much better i)ollenizers than others 

 for the Napoleon, Lambert, and Bing varieties. The work was considerably 

 extended in 1913 to determine, if possible, whether certain sweet cherry va- 

 rieties are intersterile as well as self-sterile. The results secured during the 

 3 seasons are here presented in tabular form and discusser!. 



All of the varieties tested were found to be self-sterile. On the other hand, 

 the pollen of each of the varieties tested is capable of producing a set of fruit 

 on the variety or varieties w^ith which it is interfertile. Certain of these varie- 

 ties, such as Bing, Lambert, and Napoleon were intersterile, hence mixed 

 plantings of such varieties can not be expected to set fruit unless the trees 

 are within the range of influence of some other variety or varieties that are in- 

 terfertile with them. Black Republican, Black Tartarian, and Waterhouse 

 seem to be the most efficient polleuizers for the intersterile group, although 

 other varieties were more or less effective. Certain of the seedling trees 

 found in and about cherry orchards were efficient pollenizers for the Bing, 

 Lambert, and Napoleon. At least some members of the Duke group of cher- 

 ries and of the sour cherry group are capable of pollinating some of the 

 Bigarreaus. Intersterility of sweet cherry varieties is apparently not cor- 

 related with their closeness of relationship. 



The author's observations during the 3 seasons lead him to conclude that 

 abnormal cherries may be developed on self-sterile, intersterile, and interfertile 

 varieties alike if aphids happen to attack the leaves and pedicels in the flower 

 duster. The fruit that is developed is very much undersized though the stone 

 is nearly normal. The question is raised as to whether or not this develop- 

 ment of fruit as a result of aphid stimulation is akin to the development of 

 parthenocarpic fruit. 



Commercial peach growing" in Michig'an, F. M. Barden and H. J. Eustace 

 {Michigan Sta. Special Bui. 6S, pp. SO, figs. 12). — A practical treatise on the 

 establishment, care, and management of a commercial peach orchard, includ- 

 ing a financial statement covering a period of 6 years of a 15-acre peach orchard. 



Systems of planting for orchards, N. O. Booth (Oklahoma Sta. Girc. 20, 

 pp. 8, figs. 7). — In this circular the square, hexagonal or triangular, and 

 quincunx systems of planting orchards are illustrated and described. 



Fruit packag'es in the Middle West, L. G. Herron (Oklahoma Sta. Girc. 21, 

 pp. 5-27, figs. 28). — In this circular the author points out the relative merits of 

 various styles of fruit packages in actual use. 



Preserving fruits for exhibition purposes, N. O. Booth (Oklahoma Sta. 

 Girc. 22. pp. 3). — This circular contains instructions and formulas for pre- 

 serving various fruits and vegetables for exhibition purposes. 



The rational manuring of fruit trees and grapevines, R. Dumont (La 

 Fumur raisonn^c des Arhres fruitiers et de la Vigne. Paris [1913], pp. 191, 

 figs. 11). — A practical treatise similar to the above on the manuring of fruit 

 trees and grapes grown both under glass and in the open. 



The cultivation of the vine under glass, S. F. Anderson (New Zeal. Dept. 

 Agr., Indus., and Gom. Bui. 40, n. ser., 1913, pp. 35, figs. 20).— A iwpular treatise 

 on the culture of greenhouse grapes, including directions for preparing the 

 soil and constructing a vine house. 



