1917] HORTICULTURE. 345 



Comparative merits of California avocado varieties, L. B. Scott {Cal. 

 Citrogr., 2 {1911), No. 8, pp. 2-4, figs. Jf) . — An address delivered before the 

 California Avocado Association. 



Based on their performance records the author is of the opinion that the 

 number of varieties for commercial plantings should be greatly reduced. Of a 

 great number of varieties under observation only nine, the Sharpless, Fuerte, 

 Surpri.se, Spinl^s, Taft, Monroe, Lyon, Blakeman, and Dickhison, appear to ap- 

 proach the requirements of an ideal avocado. 



Avocado varieties in Florida, E. D. Vosbury {Cal. Citrogr., 2 {1911), No. 8, 

 p. 5, fig. 1). — A brief discussion relative to the adaptability of different avocado 

 varieties to Florida conditions. 



Report on cacao manurial experiments at Djati-Roenggo during the years 

 1912, 1913, and 1914, J. R. C. Peelen and A. W. K. de Jong {Meded. 

 Proefstat. Midden-Java, No. 24 {1911), pp. 8, pi. 1). — The experiments here 

 reported show that the use of stable manure resulted in only slight increases in 

 yield, whereas the use of a combination of stable manure and superphosphate 

 resulted in increased yields of from 40 to 50 per cent over the check plats. 



The culture of citrus plants in Cuba, R. S. Cunliffe and H. A. van Her- 

 mann {Estac. Expt. Agron. Cuba Bol. 32 {1916), pp. 62, pis. 44). — A treatise 

 on citrus fruits with reference to soil and climatic requirements, methods of 

 propagation, fertilization, culture, varieties, insect pests and diseases, methods 

 of harvesting, marketing, and citrus products. 



A lemon bud variation, A. D. Shamel {Jour. Heredity, 8 {1911), No. 6, 

 p. 284, fig- 1)- — The author hei-e describes and illustrates a navel lemon pro- 

 duced by a normal tree bearing, except for this specimen, normal fruits. 



Maturity standard for Washington navel, E. M. Chace {Cat. Citrogr., 2 

 {1911), No. 9, pp. 1, 11, fig. 1). — A popular review of the work of the Bureau 

 of Chemistry of the U. S. Department of Agriculture in the development of ma- 

 turity standards for oranges, including a discussion of the effect of the different 

 proposed standards. 



A practical guide to coconut planting, R. W. Muneo and L. C. Brown 

 {London: John Bale, Sons & Danielsson, Ltd., 1916, pp. XX +186, pis. 103). — 

 This work comprises an enlargement of the junior author's bulletin on the sub- 

 ject written in 1910 (E. S. R., 24, p. 40). 



The genus Annona in the Hawaiian Islands, V. MacCaughey {Torreya, 11 

 {1911), No. 5, pp. 69-11). — A brief account of the adaptation of different mem- 

 bers of the custard-apple genus that have been introduced into Hawaii. 



Cultivation of the papaya, R. S. Cunliffe {Agriculture [Cuba], 1 {1911), 

 No. 4, pp. 12-21, figs. 12). — Methods of propagating and growing papayas are 

 described, including an account of the collection and preparation of papain 

 from the fruit. 



South American markets for fresh fruits, W. Fischer {JJ. S. Dept. Com., 

 Bur. Foreign and Doni. Com., Spec. Agents Ser., No. 131 {1911), pp. 163, pis. 1). — 

 This report reviews fully the native fruit industry in Brazil, Argentina, Uru- 

 guay. Paraguay, Peru, and Chile, and discusses the development of the foreign 

 fresh-fruit trade in those countries, with special reference to the possibility of 

 opening new markets for the United States. 



Making nuts in five years, T. P. Littlepage {Amer. Nut Jour., 6 {1911), 

 No. 6, p. 81). — In this brief note the author reports the development of catkins 

 on 3-year-old Busseron, Greenriver, and Major pecans growing in Maryland, 

 indicating the probability of the trees bearing fruit at the age of 4 or 5 years. 



Gladiolus studies. — III, Varieties of the garden gladiolus, A. C. Hottes 

 {N. Y. State Col. Agr., Cornell Ext. Bui. 11 {1916), pp. 215-451, pi. 1, figs. 31).— 



