234 EXPERIMENT STATION RECORD. 



beam, which is advertised as winter hardy, froze to the ground line. Of the 

 trees being tested at the farm, the hacliberry and green ash have proved very 

 hardy. A large number of trees and shrubs were planted for testing in the 

 spring of 1913. 



A detailed report of the work with vegetables has previously appeared in 

 Bulletin 142 of the Nebraska Station (E. S. R., 31, p. 336). 



[Report on] genetics, E. B. Babcock {California Sta. Rpt. 19U, pp. 120- 

 123, fig. 1). — ^A progress report on plant breeding investigations at the station, 

 including some data on a study of the Quercina walnut which has been pre- 

 viously noted (E. S. R., 32, p. 46). 



In the work with tomatoes, second generation plants have been grown from 

 certain crosses made in 1911. The author states that the results generally 

 agree with those secured by Gilbert (E. S. R., 28, p. 539). 



Precooling and handling investigations with oranges and lettuce, Florida, 

 season 1913-14, H. J. Ramsey (Proc. Fla. State Hort. Soc, 27 {1914), PP. 

 199-210). — In continuation of the Bureau of Plant Industry's investigations 

 relative to the handling of citrus fruits (E. S. R., 31, p. 338), precooling investi- 

 gations with oranges were conducted during the season of 1913-14. 



The first season's results as here reported show that precooling has a decided 

 influence in retarding the decay of oranges. In several conunercial handled lots 

 of oranges, both pi*ecooled and nonprecooled, which were held in an iced car 

 for ten days, there was three times as much decay in the nonprecooled as in 

 the precooled fruit when the oranges were removed from the car. One week 

 later the nonprecooled fruit showed almost twice as much decay as the pre- 

 cooled, and the differences were still consistent but not so great two weeks 

 after withdrawal from the car. Data obtained from actual shipping experi- 

 ments were not po satisfactory owing to the impossibility of having the cars 

 sent to the same market The results emphasize, however, the importance of 

 careful handling as a factor in the control of decay. 



Data are also given on the precooling and handling of lettuce. The results 

 show in general that by changing somewhat the methods of handling the crop 

 lettuce can be landed at the northern markets in much better condition than is 

 now common. The most important change in handling consists in removing the 

 heads in the field so as to leave the more or less diseased bottom leaves attached 

 to the roots, thus preventing the spread of disease to the shipping baskets. The 

 effect of careful cutting was more pronounced than that of precooling, although 

 the precooled lots reached the market in noticeably better condition than the 

 nonprecooled lots. 



Stocks for fruit trees, U. P. Hedrick {Mo. Bui. Com. Hort. Cal., 3 {1914), 

 No. 11, pp. 449-455). — ^An address delivered before the State Fruit Growers' 

 Convention, Davis, Cal., in June, 1914, in which the author points out various 

 ways in which the stock may influence the scion, and calls attention to the de- 

 sirability of using selected stocks as well as selected scions. 



Practical orchard pruning, F. J. Crider {South Carolina Sta. Bui. 116 

 {1914), pp. 7--i7, figs. 13). — This bulletin contains practical instructions for 

 pruning orchard fruits, grapes, and bush fruits. 



Bridge grafting {Michigan Sta. Circ. 21 {1914), p- 1, fig- 1)- — A popular 

 description of the process. 



[Report of investigations with grapes and olives], F. T. Bioletti {Cali- 

 fornia Sta. Rpt. 1914, pp. 1S5-1S9, 194-198). — Exi)eriments were made in three 

 bearing vineyards to determine the effects of early and late pruning of vines. 

 Pruning before the leaves fall in autumn delayed the starting of buds slightly. 



