738 EXPEEIMENT STATION RECORD. 



the greatest aiul the Kirsche field bean the smallest quantity of water from the 

 soil. From the time of blossoming to maturity the German marsh bean required 

 the largest and the Dutch marsh beau the smallest amount of water. For the 

 entire period of growth the Kirsche field bean required the least and the German 

 marsh bean the most water. 



In each of the two seasons that this work was carried on the marsh beans 

 came into blossom a few days earlier than the field beans. The progress of 

 blossoming was in every Aariety from the lower portion of the stem toward the 

 upper portion. The period of growth of the Dutch marsh bean was shorter 

 than that of any other variety. The largest number of branching individuals 

 was observed in the Dutch marsh bean and the smallest number in the small 

 field l>ean. It is stated that for grain production individuals with little tendency 

 to branch are preferable. 



Besearches in and the formation of new varieties of wheat by means of 

 hybridization, X. Stkampelli (AJld Riccrca c Vrcazionc (U yuovc Varicta di 

 Frumenti a Mezzo delVIbridazione. Rome: R. Staz. Spci: Graiticolt. Ricti, 

 1907, pp. 24, pis. 11, figs. 5). — The author describes his method of carrying on 

 wheat improvement work by means of hybridization and gives lists of hybrids 

 obtained by him in the years 1900, 1904, 1905, 1906, and 1907. The dominant 

 and recessive characters observed by the author in this work are also listed. 



Studies of the nitrogen content of wheat and its distribution to different 

 parts of an individual plant, K. W. Th.^tchkr and H. R. Watkins {Jour. 

 Aiucr. Chcm. tioc, 29 {1901), Xo. .9, pp. 1.3.',2-1331).— The data reported re- 

 garding the composition of the grain from different parts of a single head show 

 " that the best grains from the standpoint of weight of kernel, and nitrogen 

 content, came from the outer grains of the spikelets in the middle of the spike. 

 Whether these properties are capable of transmission to the succeeding gen- 

 erations can be determined only by experimental trial." 



Wheat crops of the United States, 1866-1906, C. C. Clark {U. S. Dcpt. 

 Ayr., Bur. t<t(ttis. liul. 51, pp. 35). — This bulletin presents in tabular form the 

 average acreage, production, and value of wheat in the United States by States 

 and by years for the period 1S6G-100G. 



Farm weeds of Canada, G. H. Clark and J. Fletcher {Ottawa: Dept. Afjr., 

 1906, pp. 103, pis. 56). — This publication treats of the losses due to weeds and 

 outlines the general principles to be applied for their prevention and exter- 

 mination. A cla.ssification of weeds is given and the descriptive matter pre- 

 sented gives the salient points by which the seed of each plant represented 

 may be recognized. In addition to illustrations showing the various parts of 

 the itlant such as the leaves, stem, roots, blossoms, and fruit, i)]ates are given 

 showing the seeds of many of these plants both in their natural size and also 

 much enlarged. Brief notes are also included on ergot, couch grass, rye, and 

 timothy. The description of each weed comjirises its introduction, time of 

 flowering, propagation, occurrence, injury, and remedy. 



HORTICULTURE. 



The fruiting habit of the grape. C. A. Keffer {TcnncRsrr f^ta. Bui. 77, pp. 

 S5-.'t6, figs. 5). — The results are given of a study, made during 1906 in the sta- 

 tion vineyard, of the fruiting habit of four commercial varieties of grape : 

 Concord, Niagara, Delaware, and Brighton. Six systems of training are used, 

 viz : Munson, Kniffiu, double Kniffin, renewal, loug-arm-short-spur, and cordon- 

 horizontal. In the last two systems the new wood is cut back to 2 or 3 buds, 

 in the others the growth is left from G to 12 or more buds, depending upon the 



