HORTICULTURE. 339 



an increase in the sugar content of stored fruit. The experiment has not been 

 continued long enough to warrant any definite conclusions relative to a fea- 

 sible and practical means of holding grapefruit. 



Olive culture in Tunis, Guillochon et al. (Bui. Dir. G&n. Agr., Com. ct 

 Colon. Tunis, 18 (1911,), No. 77, pp. 268-296).— A cultural and statistical account 

 of olive and olive oil production in Tunis. 



A test of conamercial fertilizers for grapes, U. P. Hedrick and F. E. Glad- 

 win (Neiv York State Sta. Bui. 381 (191J,), pp. 201-230, pi. i).— This bulletin 

 reports a number of experiments which were conductotl on a leased vineyard 

 near Fredonia, N. Y., and also cooperatively in 6 vineyards in various parts 

 of Chautauqua County in order to determine the value of commercial fertilizers 

 in increasing or restoring former yields of grapes in the Chautauqua grape belt. 

 The vineyards were selected to obtain fair averages of soils and of health and 

 vigor of the grape plantations of this region. The experiments were conducted 

 for a 5-year period, commencing in 1909. 



The I'esults of the experiment in the Fredonia vineyard have shown in brief 

 that nitrogenous fertilizers had a marked beneficial effect upon the yield and 

 quality of fruit, as well as upon leaf and wood growth. Lime had no appre- 

 ciable effect in this vineyard and phosphorus and potassium had so small a 

 beneficial effect that their use was not profitable. Hence it is concluded that 

 nitrogen is the limiting factor. 



The cooperative experiments were less conclusive. Commercial fertilizers, 

 stable manure, and green manure crops were all used and the results vary 

 greatly in any one vineyard or in the several vineyards compared with one 

 another. The data obtained indicate that the fertilization of vineyards is so 

 involved with other factors that only long-continued work will give reliable 

 results. 



The authors recommend that the following steps be taken in restoring the 

 failing vineyards: Good drainage, control of insects and fungi, improvement in 

 tillage and general care, and the application of such fertilizers as may be found 

 lacking by actual test. 



Bibliotheca vinaria, A. L. Simon (London, 1913, pp. VIII-{-3/fO).—A bibli- 

 ography of books and pamphlets dealing with viticulture, wine making, distilla- 

 tion, and the management, sale, taxation, use. and abu.se of wines and spirits. 



The history and development of the strawberry, E. A. Bunyard (Jour. Roy. 

 Hort. Soc. [London^, 39 (1914), A'o. 3, pp. 5^1-552, pis. 8).— A review of the 

 literature of the subject, including a bibliography of the most important works 

 on the strawberry. 



Classification of the genus Annona, with descriptions of new and imper- 

 fectly known species, W. E. Safford (U. S. Nat. Mus., Contrih. Nat. Her- 

 barium, 18 (1914), Pt- i, PP- XII +68, pis. 41, figs. 75).— This bulletin embraces 

 a synoptical view of the genus Annona by natural groups and sections with 

 descriptions of additional new or inadequately known species. Descriptions are 

 also given of two closely allied new genera, Fusaea and Geanthemum, together 

 with critical notes upon Rollinia, Duguetia. and Raimondia. 



Mango crops, and some factors influencing them, A. C. Hartless (Agr. 

 Jour. India, 9 (1914), ^^o. 2, pp. 141-159). — A survey of mango production at the 

 Government Botanical Gardens, Saharanpur, based upon information found in 

 old reports for a period of 27 years. From these data the author makes deduc- 

 tions relative to factors influencing mango crops. 



Control of imported tea seed, C. Bernard and J. J. B. Deuss (Indian Tea 

 Assoc., Sci. Dept. Quart. Jour., No. 1 (1914), pp- 1-28. figs. 6). — ^An English 

 translation of a report previously noted (E. S. R., 30, p. 742). 

 57707°— No. 4—14 4 



