436 EXPERIMENT STATION RECORD. 



A summary of sugiir beet oxitoriniciils carried on at the station siuce 1^01 

 shows tlie sugar conteut to have ranged from 0.81 to 16.3 per cent as averages 

 for the different years. 



Field manual for sugar-beet growers, li. L. Adams (Chicago, 1913, pp. VI + 

 13Ji, fifjs. G). — This work records tlie re.sults of practical experiments and com- 

 parative field o))servations in tlie production of sugar beets from many sources. 

 Tlie subjects Irealcd include cultural work, growing beet seed, siloing beets, 

 manuring, crop rotations, feeding by-products, and beet troubles. Statistics 

 are also included. 



[Manurial and variety experiments with seedling and other varieties of 

 sugar canes], J. II. Bovell and J. 1*. d'Albuquerque {liitt. Agr. Work Bar- 

 hados, 1910-1912, pp. Jf-111). — ^Results of 19 years of experimental work are 

 given. In the manurial tests chemical fertilizers were used in addition to 

 barnyard manure, and taking " the experiments for the 19 years as a whole, 

 the largest average yield (S,220 lbs. saccharose) and the best monetary result 

 was obtained where only nitrogen and potash were applied. In this case the 

 gain, after i)ayiug for the manure, was $17.84." 



Identification of the seeds of species of Agropyron, R. C. Dahlberg ( U. S. 

 Dept. Agr., Jour. Agr. Research, 3 {WW, No. 3, pp. 215-281, figs. 4).— This 

 article gives the results of a study to attempt to discover a diagnosis that 

 would unfailingly identify the seeds of the species of Agropyron. Such a 

 diagnosis, it is claimed, would be of value to the farmer, the seedsman, and 

 the seed laboratory. Laboratory methods of identification are described that 

 cover characters regarding shape of seed, rachilla. lemma, and palea of seeds 

 secured from many sources within the United States. 



A summary of the work states that " it is possible by careful examination 

 to distinguish in commercial seed mixtures the seeds of the three species of 

 Agropyron: A. rcpens, A. smithti, and A. tenerum. There is no one character 

 which can unfailingly be relied upon for this diagnosis, but the combined char- 

 acters of lemma, palea, and rachilla are necessary for safe determination. 

 Probably the nearest approch to a single critical structure is found in the 

 palea, which exhibits fairly definite characters in each of the species." 



Identification of plants, F. Fyles {Canada Expt. Farms Rpts. 1913, pp. Jf93- 

 406, pi. 1). — This describes Amaranthits spinosus, which has recently been 

 identified in Canada, and recommends methods for exterminating it, and also 

 Acroptilon picris, Hicracium aurantiacum, If. floribundum, H. pratetise, 11. 

 prcaUiim, and //. piloscUa. An account is given of goldenseal and its culti- 

 vation. 



HORTICULTURE. 



The encyclopedia of practical horticulture, edited by (1. Lowther and W. 

 WoRTHiNGTON {North Yakima, Wash., 1914, t'o/s. 1, pp. XV+664; ~. PP- 665- 

 1336; 3, pp. 1337-2037+24, iUtis.). — This three-volume work was prepared 

 under the auspices of fruit growers in the Pacific Northwest. It comprises as 

 a whole a reference system of American horticultural practices and investiga- 

 tions bearing on horticulture with special reference to fruits and vegetables. 

 Some attention is given to floriculture and propagation of plants in general; 

 peanut culture, nut culture, mushroom culture, and bee culture are also con- 

 sidered. 



The arrangement of the work is alphabetical and all of the commercial fruits 

 and vegetables are treated in detail with reference to the various processes 

 involved in their propagation, successful culture, harvesting, and marketing. 

 Practically all the practices involved, such as irrigation, dx'ainage. cultivation, 

 pruning, intercropping, fertilizing, spraying, harvesting, storing, marketing, etc.. 



