342 EXPERIMENT STATION RECORD. [Vol. 36 



orchard, planting and care of the young orchard, pruning the bearing trees, 

 cultivation and irrigation, winter protection, caprification, splitting and souring 

 of the fruit, and pests. 



Tabular data are given showing the altitude, temperature, and rainfall con- 

 ditions in sections of Arizona where the fig is grown. Observations and data 

 are also given on the present status of fig culture in different parts of the State 

 and on the growth and condition of 60 trees, representing 43 horticultural 

 forms, that have been under observation for three consecutive seasons, together 

 with yield records of some varieties growing at the station. 



During the process of harvesting the 1915 ci*op the specimens of many 

 varieties were observed to gradually decrease in size with each subsequent pick- 

 ing. In some varieties the size of the fruit decreased during midseason, again 

 increasing in size with subsequent picking. In others, there was an increase in 

 the size of the fruit during the season. There was also a variation in the 

 number of crops produced for the year. One, two, and three crops were pro- 

 duced by different varieties, the number being determined very largely by low 

 temperatures occurring during the winter. 



The fruit of the crop of figs, commonly known as Brebas, which is developed 

 in the autumn on the tips of young wood, passes the winter on the naked 

 branches of the trees, and matures the following spring, is usually of good 

 size and can be distinguished from the second and third crops by its position 

 on the wood of the previous season. A study of the varieties of figs grown in 

 the Salt River Valley shows the most hardy and prolific varieties to be Lob 

 Injir, Bulletin Smyrna, Black Mission, Black Adriatic, Bardajic, Rose Blanche, 

 Dauphine, and Ronde Violette Hative. Several other varieties are also recom- 

 mended for culture. 



As a result of the study as a whole the author concludes that the proper 

 selection of varieties will make fig culture possible in a wide range of climatic, 

 water, and soil conditions, such as cover a large proportion of the agricultural 

 area of Arizona. 



The chemical composition of American grapes grown in the Central and 

 Eastern States, W, B. Alwood et al. (U. S. Dept. Agr. Bid. 452 (1916), pp. 

 20).—T\\e present report is supplementary to a bulletin giving the results of 

 analyses during the period 1908 to 1910, previously noted (E. S. R., 26, 

 p. 441). 



The analyses as here presented include the results for 1911 and 1913, a 

 number of additional grape districts and varieties, including the Rotundifolia 

 grapes from North Carolina, being covered by the work. In addition to de- 

 tailed tabular data the results for sugar and acid determinations of practically 

 all of the varieties examined during the five years' work are summarized. 



Report of the assistant horticulturist, T. B. McClelland (Porto Rico Sta. 

 Rpt. 1915, pp. 30-33, pi. 1). — A pi'ogress report on the station's work with 

 coffee, cacao, and vanilla (E. S. R., 33, p. 536). 



The testing of foreign varieties of coffee was continued on a larger scale. 

 Additions during the year included the Bourbon and Quillou varieties, several 

 new strains of Robusta, and seeds from selected individuals. Seeds of promis- 

 ing varieties have been widely distributed. An extensive planting of nursery 

 trees made In August, 1914, in wliich part of the trees were set in permanent 

 location with the roots incased in a large ball of earth from the nursery and 

 part of the transplants were set with the earth removed from the roots, has 

 confirmed i)r('vious results relative to the value of transplanting trees with a 

 ball of earth attached. In the first six months the trees transplanted with the 

 roots incased in earth showed more than three times as great an Increase 



