HORTICULTURE. 1131 



homozygous with regard to Inpli nitrojjon rontont .•ind those with inollow j^r.iin 

 were considiMHMl to l)e imre witli respect to low nitrogen eonteiit. Analyses made 

 of sucli bnlk samples gave an average content of 2.4 and 1.(5 per cent of nitrogen, 

 respx'tively. The remaining sami)les were mixtures of translucent, starchy, 

 and tlecked grains, the last tyi)e being the most a])undant. The occurrence iu 

 one F. 3 bunch of grain resembling each of the parental forms is tal<eu as show- 

 ing that the F. 2 plant from which it was descended was heterozygous in its 

 endosperm characters. The total nitrogen contents of the majority of such 

 F. 2 plants fell within the limits of 1.7 to 2.1 per cent. Thus, the nitrogen con- 

 tent from 1.3 to l.G or from 2.3 to 2.G max'ked approximately the pure low or 

 pur(> high types distinguishable from the heterozygotes by analyses only. The 

 total number of plants with low nitrogen content was 2G, 03 were apparently 

 heterozygotes, and 21 were high in nitrogen. 



The baking properties of a number of hybrid wheats, as determined by other 

 investigators, are discussed, and the results taken iu all are believed to indicate 

 that the problem of breeding strong wheats suitable for English conditions offers 

 no special difficulties. It is also believed that high yielding capacity and 

 strength can be obtained in combination iu the same variety, although it still 

 remains to be determined whether high and low yielding capacity segregates at 

 the F. 2 stage. 



HORTICULTUEE. 



The scientific aspects of Luther Burbank's work, D. S. Jordan and V. Ij. 

 Keij.ogo (San Francisco, I90'J, i>[k XlV-\-ll'), pis. /.'/, fiffs. 20). — This work 

 comprises a paper entitled Some Experiments of Luther Burbank ( E. S. R., 

 IG, p. 773), by D. S. Jordan, and one entitled Scientific Aspects of Luther Bur- 

 bank's Work, by V. L. Kellogg. These papers were originally published in 

 Popular Science Monthly, and are here reprinted in book form with the view 

 of acquainting general readers with the scientific character and value of Bur- 

 bank's woi'k. 



Vegetable growing in Cuba, C. F. Austin and E. W. Halstead {Estac. 

 Cent. Ai/ron. Ciibd liiil. 13, pp. J/'i, pl-s. 6). — This bulletin reports the practical 

 results secured by the station during the past 3 years in growing and marketing 

 various kinds of garden veg<»tables. Brief descriptions are given of the differ- 

 ent varieties grown, including statements relative to their adaptability to the 

 soil and climatic conditions of Cuba. 



The home garden, E. E. Rkxford (Pfiiladelphin and London, 1!)09. pp. li)S, 

 pis. 8). — This is a po[)ular wni-k on vegetable and small-fruit growing for the 

 use of the amateur gardener. 



Report of the government horticultural experimental fields in South Hol- 

 land for 1908, ('. II. Ci.AASsioN i:t ai.. {VcrsUit/ Rijksl iiinhouwprocfrcldcn 

 Zuid-llollund, lUOH, pp. 120). — Data are given for IGl cooperative cultural, 

 variety, fertilizer, and spraying experiments with fruits and vegetables con- 

 ducted at various localities in South Holland in 1908, under the direction of 

 the professor of horticulture at Boskoop. Several experiments are also re- 

 ported in which fruit grown in i)aiier sacks was comi)ared with fruit grown 

 without siK'b in'olcclion. 



Contribution to the physiology of the graft. Influence of the stock on 

 the scion, (I. Rivikrk and (J. Bailjiacue (Jour. S(h: Xut. Hort. I'rancc, J/, scr., 

 It) ilUDU), Feb., pp. /.i.i-/.;.7).— Analytical data secured in 1!»0S are given of the 

 must of grapes of <Jli(i.s.^elas musqiK^ grown ui)on its own roots and upon 10 

 different stocks, which api)ear to show, as the authors previously found in in- 

 vestigations with apples and pears (E. S. li.. ll>, p. ."».■{',»), tiiat the stock has a 



